42CaaNE8839 CORBIERE 010

U'HKI Ki'^UKT UK FKUSPHCTIKG

.in

T^P.2f?. RANGE XXV, ALGO^.

^/;i^A^M

r/'-;,

z~7- !

Au-at. }lst, 1912.

IRON' RANGES

The following Iron Ranges have been locale ci up to the

present in Twp.23, Kange ftXV, Algoma:

The Josephine Iron Range. The Bartlett Iron Range Brooks Iron Range No.l. brooks Iron Range No.2. Brooks Iron Range No.3.

Also a few small outcrops of iron f or.M-.it i on includingNoy./tjf), and 6, a dntached outcrop South of Candy j'.ountain, and a s;-:all body at the East end of the lake about one 'juurlcr of a ndle Jouth of Kimball Lake.

The Josephine and bartlett Ranges i\*r\\ not be di.scussed here since they have already been fully dealt with.

Brooks Iron Range Ko.l.

Thin Ranf.e has been discussed in detail in the reports for June 7th and July 31st, 1912. (Gen.Prosp r 11^ s) :t is a body of Helen iron formation 80' - 170' wicte a r:.-, r.early i; milt: lo:,;:. V-ie iron foriiiat: ion is granulcir, massive and banded carrying, both sicioriti and pyrite, also smaller a:.vju.-its of pyrrhotite ;i,a ^notite near an i ntr-uciir-^

dial'ase dyke, v/hicJi cut.;, off the Range at the ..'-.L- c r i y end. VM-, br.r.-jy

strike Kast and //est, (i .e.parallel to thf .\an t-;t-) !-"^ * iip Nort.'v.;i;rd M.

SO degrees. The Raff,^ was crosscut by 21 tix-nchot., ,- 4-iicn tho-.;..-;: u-i lenses of more or l^ss ;nixed pyrite anc sidyritw. Vh-- fxtr; (;t of t.... pyrite is roughly at; follows:

Kyt.ent of rvril.e:

.-.. l lense 200 feet i^r,-; ..'it,'-, LI- uvc.rai-e v.-;rit : i of 1^li. l lense /+00 feet lc:,^. v;i t ; i an avc-ra;;-i v.-Idi.?, of i;C. l lense ^00 feet lo:^ w i i.,i at- a '-.rag., wi.ir,-, of IS

CD.'it'd

This ore is pyrite with a siderite gangue, running up to j (or perhaps higher) in sulphur, 43# iron (before ignition) and

25;v' loss on ignition. In order to minu it as a pyrite proposition concentration would be necessary, but on account of the sinilar l specific graviti-'i: of pyrite and siderite, ordinary wet concentration j would not be possible. It is probable though that the separation j could be made magnetically. However, under present conditions, the i extent of the ore would not warrent this treatment. S

r t

Fxtftnt of pyrite and Siderite; jl

The extent of the pyrite together with the siderite is jA. l lenso 400 feet long with an average width of 15' jD. l lens* 500 feet long with an average width of 20' jC. l lense 400 feet long with an avcrape width of 25' lD. l lense 150 (?) long with anaverage width of 20' |E. l lense 300 feet, long with an average width of 25 f l

i The portion of the ore low in sulphur is not at present \

large enough to be of economic importance. i If at any time a demand should ^rine for a mixture of

pyrite and siderite, t.his Ran~e would be worth further investigator.. [The above remarxs apply of course to the surface show i p/-?,

; id, should the c-ii 1. racter of the ore charge with depth, it .-night still be of economic value. brooks Iron Hanrr I'o.,?.

The reports for sup e the 21st, Augu*. 7th, and August, It h, (Gen. Prosp files) gives details i.bout t.his range. It is un ou. crop of Helen iron formation (similar to tht variety on crooks Ko.l) j 00 to

500 feet in width and running V.'est Korth V.'est for a little over "* of

a mile. The bands uip vertically and strikt: parallel to 131* Han^c . Tni range was crosscut by!4 discontinuous trenches, wiiich shov;..d up ?. bodies of siderite: om; about 400 feet long ar: f 30 feet wide, ana another about.

s45 feet wide and only about 100 feet lorig. At present neither of t.'-.hs* ar" extensive enough to be of economic i:;.port,anctj . Iron R a ri/?/: ''o.} .

Detailed information about this Range is r,iv*n ir: the report

of August. 15th, 1912 (Gen. Prosp .f iles). It co:-sists of a nu"its r of corii

of Helen iron fornv.t.ion 7:0 to 100 feet in width art! txi.ei:cliri,~ "..'es*. Torth '..'e s t Tor about ;? mile. The iron forr.Mlon i .c. jrrar.uli-.r, r.-.asi-ive a i "i

bfjjif^c, carrying s'i r) or i 11- with lesser i::.oi;r.i..-: n ' ^rii^. S.-vera.! lens^ of siderite occur t .t intervals along th..- i-u',^,.:., the lancet of v.-hich is a.,out 400 feet Ion;; .-ir.d 10 to ',' rJ f eftt. v.-idrj. Y'v, :.. -r, t -eFt..:;-'" It-'-s-

is soaiewhat unique in occuring apart from any siliceous iron formation.It is fairly pur* siderite and is about 20 feet widu by 120 feet long.Under present conditions these bodies a lso are too small to warrant furtlinvestigation.No.A. Outcrop; of ifelen iron formation (se*j accompanying plan) is aboutlo feet wide and 700 feet long and is similar jn variety to the ironformation in Brook?.' Iron Range No.l (that is granular, massive, andbanded, and carrying siderite)No* 5 Outcrop: of Helen iron formation has not bnf-n invest jgited butapparently is not, extensivePo.6 Outcrop: has not been investigated but appears to be only of smallextent.

The pyrite boulders shown on theplan about l mile North of outcrop No.5. contain apparently fairly pu;-..1 pyrite. They a rv deeply weathered and also rounded,:;unrtz Vein K').l: (See report for August 31st. 1912: Gen Prosp.files) is ^2 chains Morth of the three mile poet on tho .Vest boundary of Twp.23 nango XXV. It outcrops at intorvalo for ia bo ut 730 Fnfct, t;K.ug';it. is r.-ot certain that these outcrops all belong to th*-- pane VKO'II. The width of t h i? vein is l -, to 10 feet wit!) an average of porhcps n f e ut. 7)u- 'jvi&rt-a is both granular and glassy and is well rninr ralized with crystal;; of pyrJte and occassional specks of galona. The country rock is wet i pi y greenstone, but in the i vie d i a t e; vicinity of the vein, there i y a rusty weathers' r,/ rock containing pyrJte, which avpoars to ot.- an i-ruptive of ('eyv/ating Ago. A few chaines i'oi-th of t h.i r-; ^ . i n i.h^r-'- 1:-. an t x 11: r. s i ve i n t. rsip i or. of d i a b a so. n-y .'1,00 Y:

Th*- rocl"i of Twp.PS Range ;:;-:V are of !:-?rrwat .In age i; ;'-n:.-J*-d T'f. ively by oiai-asc of pont.-riuroiuan ago wxcopt i/' t.r:*-, .".r^t,;. "^::t. o r M 'K-r, acro?^ V,-!TJC''I fioj-e ex t one.*; an ar^-a oT Laur--f; i. :i gran i t.c. T'.'.v-

a r r- a scrjfcs nT sch.ir?t.v ( grf-t-rr t.one, and breccias an:: cor ^.lo;,u-atc-.c,, whjch ir' pl-iice.s ;-ho;/ evidences o.r uein/" volcctnic ofi^n. All vhest; roc'-J are highly ferruginous in certain ar^a*:, ai :ha;r- u;- \ \-in. 1 '-.-l;-r: Iron rust or.' Lheir ./tato*: red surfaces. Ther-o arc.- also in t.hi..; T'.;p. t.vo classes of rock which occur inostl" in lin; vicinit.v of j i-on Kan^es, r,~;:tolv

* - t^ * *

ruj:t.y w* ctheririg chert, and 'ji-c-.rLg porphyry frcijii!-. CT t'-.-- fon.-ior '/-M.- no: t. "t.r-i'kJn.-3 body t^t.er-di.: vast. ar:d ..'er.t aL.o\(t ^ .--lie .'V-.rt.h of t.--...-

Jot-fcphine ir-on na/./^e: of tVje nijartx por;..!'-yry ;cijJ:.i. !-!i-r-i.- Is h. lr^--. t .n,~/

in tho vicinity of outcrops Tor..A and f. of h'.rlen iro:. f o r:;.-! t i on. ."arts

of this body carry small lenses of pyrite and resemble very closely the Helen iron formation. CANOE ROUTES:

As shown O''- the accompanying plan there are now several good canoe routes through Twp. 28 Range XXV:-

One extending Northward fror,i the Josephine Jet. through Brks Lake, Andre Lake,. Elephant Lake and Roy Lake.

One extending Eastward from Andre Lake to the Brooks Iron Range No. I., and Westward to amp 4 on the Magpie River, (this is not well cut out).

One extending westward from Elephant Lake to the Magpie River, and Eastward through Spider Lake to ncVeigh Creek.

The portages running Eastward from Brooks Iron Range to WcVeigh Creek can hardly be followed. Twp.2c Range

A small amount of preliminary work was done in Twp. 23 Range XXVI in the vicinity of Eccles Creek, Roy Lake and Roy Creek. Several small outcrops of iron formation were seen, consisting of interbanded silica and magnetite. The most extensive of which is on the Gravel! e claims, but hone of them are of economic importance. A quartz vein (Ho. 2) was found South East, of the Gravel] e clair.s in the granite, though not far from the Keewatin-Laurentian contact. This vein is from l to 3 fret wide and is well mineralized and with chalcopyrite.

".E.L.GOOD.VIIs".

42Ce2NE8839 CORBIEREaaSS CORBIERE 020

REPORT ON BROOKS IRON RWGE NO.l. Twp. 23. Range XXV.

Dist, of Algoma.

The Range consists of Helen iron formation and is from 80-170 1 wide and about ^ of a '.r, ile long. At the west enc. it is cut off by a diabase dyke and at the east end it dips into a lake and does not re-appear on the opposite shore of the lake. The Range is faulted about 2000' from the west rend. The surrounding country rock consists ef Keewatin Schists and Greenstone. There are also intrusions of Granitl East of the Range. The iron0formation strikes East and West and dips North at an angle of about 80 .

Ko Iron oro of any consequence was found on the Range. There| is however, a band of low grade Pyrites vitli a siliceous Gangue

extending along the North side of this Range. This band is about 900' long and varies in width from 10 - 70'. Toward the west thi? belnds into Pyrrhotite and Magnetite, the alteration probably being due to the diabase dyke.

In the central portion of the Rangn there is a small deposit of low grade Pyrites and at the Eastern end a band of about 5' wide. The quality of t h f pyrites does not look promising, as t h i-- sulphur contents is very low.

Soo.Ont.

June IS/12.

4aC02NE8839 CORBlERE002? CORBIERE 030

'."/

Kagpie Hine. Ont. July 16th, 1912HH

Weekly Report. General Prospecting.

R.W.Seeley, Manager Mines Dept., Sault Sre.Marie. Ont. .

r

Dear Sir:

I beg to rt-port work done on the General Prospecting for the week ending July the 14th, as follows:-

The results of last week's work have been mostly negative. The trenching done on Iron Range No. 3 North of Andre La X e has shown up no body of siderite or pyrite which present indications would showroto be of any consequence. The Range has been traced for a quarter of a mile farther East and heads directly towards Brooks Iron Range Ko.2. More work will be done on this Hange and sampling completed until we can get mot definite information.

A small amount of additional exploration done in the vicinity of Andre Lake has shown up no further Iron Range.

v/e have received analysis slips from sone of the smaplestaken on Brooks Range No.2. These would indicate; that this \angr contain: a body of fairly high sulphur ore and it is the intention to have nore work done here in the line of sampling and delimiting the high sulphur bod;

Little was at the Magpie during the earlier part of the weeV going over the oldreports. He and Goodwin have made one trip out to the Brooks Iron Ranges to look things over in rfgnrd to increasing the

parties and so forth. V/e will keep one central Camp and will send a couple of men out on trips on four or five days loch f. ing iron Rangs and wh*-'n anything promising is foupd work will be concentrated on this.

Yours trul.-.

A.Hasselbrinr,. General Supt.

42Ca2NE8839 CORB l ERE002F. CORBIERE 040

Brooks Iron Range

Looationi

The section of this iron range which was investigated is located on claim No. 223X approximately 3 miles in a direction north 150 west of Hawk Junction and immediately south of Brooke Lake.

Access! 'i

A winter road in fair condition runs within a half mile of the property.

Previous Work i

The property was thoroughly trenched end sampled for iron in 1912, the work being done under the direction of Z. L. Goodwin.

Ceologyt

The area is underlain by schistose tufi s and 1'lows. Strikes are genertlly east-west and oips vertical to steeply south.

Xiinerel Occurrences;

Iron formation can be traced in a general east-west direction i or approximately 3tOOO' across the eattern portion of claim No. 223X. i'.idths vary considerably but in general average 100*.

*.ithin the iron formation and occasionally along its southern contact are found lenset. of siderite containing large amounts of pyrite and pyrrhotite. The siderite deposits are however quite small, the largest leing 20' in width tnd 35 0 ' long. From the results of Goodwin 1 s tun pi ing in l'?12 it was learned that the siderite avert^es 42/1 Fe and 25'/* Sulphur.

The purpose oi the present investi, ttion v;as to deterttine i;' the pyrrhotite contained in the siderite *as nickel bearing. To this tr.d 4 trench*.:. containing large taounts oi pyrrhotite were stc.j-ed. Assaying proved the pyrrhotite to contain no nickel.

Information and sampling by l,1 . Reid.

Report by J. R. Sooth.

It tflning: Claims T-454 and 1-455 are situato la the UichipHolea ' District, nA togstbor contain about 60 acres, I0ts the area of the

Q ~ *Algona central Bcifcay rirfit-offwrj, on* 1.4 acre* for oidlngoa the

Kest side of tho Algona Central Bailray, which parses threap X-454

frw the eoilhera to the northern fcncidary. This fining Property is

only about 21 nilcs by the Altfsai Control Hailvr^y to tho HtiilTi^

nt HiohiptintOT nnrbor, on Ltko gu^rlor. Thero ia aleo a

ore*a?ck at Eichipfcfetcn Ilirter opcrateC by tho Algona Central Roilw^r (teapraj, which ni^st oharjn 60 onnta per ten ibr himlinff the oro to Michipicoten Harbor ntxH loading: it m stecsshipe. IVon }Iichip4toten Barber, on I^be f^perior, tho iron pyriteo can be

shipped by lake f renter to Lote ?rie nnd otter Greet lakes ports, lo r about 60 ocnta per ton erd less.

Z. A t a point ateut 800 feet north rf the south loundnry line of

Y-454, the enid rcihrcy Hnescroures tro ore bodies rf iron pyrites,

each obont 40 feet wide. There iron pyrites deposits are Orscribed

In Uomolr 147, of No. 127 -Geological Scries, of the Geologic*! ^irToy

cf Osneda, published in 1925, nt Pago 90, c 3 follwsi "Another fiat

scotia le exposed in rock-crits rlon- the rail^y, vhieh crosses tho

iron formation at nn caplo of abmt 45 degrees. Fron south to iiorth

the section rf.o*p a palc-grr.rn felds;?ar porphyry schist, rhicb r^dcs

into 15 feet of UH^ter-colbrcd oid^rito. Ther- foliole a do?rcctioa,

35 feet wiOe, filled rith grnvcl ccrr.ntnd t^cth-r uith lir?.nitc.

Beyond this i* abai.t 40 fet rf p^nritc nirt^d with eidrritc. ?h^ is

by 20J foe t of hondnd sillien, nn InUrtnl cf Itoaltc,

boulder-drirt, .nd 150 funt .7)nrc n^ Vw?cc! sillicn of L^r^

or.jf]pry texture, ^r n?rt outcrcp in Q dsrk-gr-y

tn ^?x J .tet f 1. ̂ r̂Jir.?.7jJ.*^r:^rl;

l: rt "lchinfctaten !!nrfcor, on Lr.!:o L^CiM'-i', tliel'o ia tlso a

f irat-olMte ort-d?ck at Eicbipfcfcton Harbor operated by thn LlffXA

Central Rallwtty teronny, which ni^st oharja GO crnta per ten for hiraling the oro to Michipicoten Karlor nnd lending It on steamships. Froa Hichipftfoten Harbor, on lato Superior, the iron pyritea can la shipped by late f renter to Lake Trie end otter Great lakes ports, for about 60 otnta per ton and less.

2. At a point abut 800 feet north of the south boundary line of 1-454, the eaid rallvcy linexcrosrea tro ore bodies rf iron pyrites, each about 40 feet vide* There iron pyrites deposits are described

in Mffwir 147, of Ho. 127 Oeolcgical series, of the Geological Surrey ef Canada, published in 1925, at Page 90, aa follows! "Another fine ffeetiti le exposed in rock-cuts along the railvay, vhioh crosses the iron foraatinn at an angle of abcnt 45 degrees* Fron south to Sorth the section ahovp a pale-green feldspar porphyry schist, vhicb grades

into 15 feet of lighter-colored aiderito. There follow a a depression, 35 feet vide, filled with gravel cerro ted together nith limonite, Beyond thin le about 40 fvrt of pyrite nixed vith siderite. This ia fucoeeded by 2ft) feet of banded sillica, an interval of liaonite, oeoented boulder-drift, and ISO feet anre of bonded sillica of nora

granular, ougery texture* fte next outcrop is t dark-grey lart* 0| . "Yhia body of prrite is thought to tximi l f OOP f** t or BOvest of tbe for ljnenity and sens ean B t ill ba *r

in that

Pagt 81 of the said Beporti "Dving to the proxiaity on the railway*

f a large body of pyrite, and the prevalence of pyrite in the 7-oile•* * "

belt of iron fornation to which this belongs, it seen* likely that

the abofe siderite bo^y would be found on farther Invest l pt ion to

la pyritlferouB. in analysis given on page 62 of the pyrite exposed

along the railway, indicates it to contain (O par oent, of pyrite,

(2)r. ~ - . ' - -. -

somewhat too los-grade to be a pyrite ore."

On page 62 of tha said Bepcrt, the results of the analysis vara) Iron,• 4 ** ** -•*,*.* *** *

414jf| sulphur, ̂ 26* S7)C; iraenie, 0,0#j Zinc, 1,48#; Sillic&eioos

material, 4.40. Tha o re bed i ac appear to go doyn to great depths oa the Josephine Martlet t Iron Hmge, The pyrite ore also carries gold."

S. i&e f o 11 cuing quotation IE taken from Page 123:

"HDLDSWBTH PIBITE CTOSIT. gone titc Jreiicuc to 1914 a Uock of tar/

part, caccive pyrite, about 10 feet in diameter at the surface, was

diecovored jnct about the raiddla of Mining Claim 8.2.12.1054, in Tom* chip 28, Range ^5* Search had accordingly been male in the neighbor-

* - * * - . . f ^.

hood for tha parent deposit of pyrite, about 1,000 feot north of the

block of ore first-diecoTored. It is rather doubtful whether tha block

was f r oa this deposit) for tha latter is represented at the surface

only by a band cbout 2 feet uido, of dull blaok powdery material,

vhich the prospectors called "black sand," and vhich ia probably a

ferrous oxide rosa It an t from oxidation of f^rite* Hoi e TO r, diamond

drill borings afterwards. disclosed a large quantify of hi^i-grada

pyrite, siailar in appearance to that in the Block. (Figure 14).

"The Algoma steel Cbrporaticn secured a lease and Option to

PurchLss the property, and betveen 'Jay, 1^16, and the spring of

1919, explored the ore-body lith a diamond drill. Twenty-two holes, in

frnt length froa about 225 tc 740 feet, wore drilled at

anglee of 40 to 80 degrees across the ore-bc^y froia either side.

Seventeen cf tliese holes encountered pyrite at vertical depths,

ranging from 135 fact to 525 feet. They indicate the existence of

t*o lenses of pyrite about 200 feat apart, and offset each other,

as shosn in figure 14. They dip towards the north at 65 to 70 degrees,

and lin in volcanic green schist en the north and a light gray s eh i s to si

to nassive sericite schist on the south.. ThoE*stern lens has bean

locc.tc'1 "by driliin;; f~r 1.10C- loci Jc: iss.itallv ^nti to AT. f.i

pare, r&ccivo pyrite, fcvGut 10 fe*. *. in diuaetcr c t the curiuco, vr-s

discovered just about the niddlo cf .'dining cUin 3.3.U.1054, in 'i'ora-

ship 28, Rcnge ^5. ccarci; had accordingly "been cu*de in the neighbor-

hood for the pcrcot deposit of pyrite, about 1,000 feet north of the

"block of ore first-discovered. It is rather doubtful whether the blockr

was from this deposit; for the latter is represents*} at the surface

only hy a band cbcixt 2 feet *idc, of dull black poi/dery siatorial,

which the prospectors called "black sand," en,! i-hich is probably e

ferrous oxide ro sultan t from oxidation of ^rite. However, diamond

drill borings afteru-ards disclosed a largo quantity of hi^i-grade

pyrite, similar in appearance to that in the Block, (figure 14).

"The Algona steel Corporation secured a lease and Option to

Purchase the property, and between May, 1S?18, and the spring of

1519, explored the ore-body with a diamond drill. Twenty-two holes,in

f ret length froa about 225 tc 740 feet, wore drilled at

tnglec of 40 to 80 degrees across the ore-body frou eiifcer side.

Seventeen of these holes encountered pyrite at vertifol depths,

ranging from 135 foet to 525 feet. They indicate the existance of

two lenses of pyrite about 200 feat apart, and offset eich other,

as shown in figure 14. They dip towards the north at 65 to 70 degrees,i

and HQ in volcanic green schist en the north and a light grey schisto

to massive sericite schist on the sou th,.Tho Eastern lens has been*

located by drilling for 1,100 feet horizontally End to an extreme

depth of 525 foet vertically." Page 124: "Officials cf tho Algona

Steel Corporation feotLnate that the tro lenses examined with the

drill contain 900,OOD tone of good pyrite. Analysis of 10-foot sectiom

of the drill-core yielded a sulphur content varying from 39,80 to 49.24

per cent, and an average of 46.31 per cent, for three of the drill

holes. (See Page lK.)n

.^T^,^ ,..^,~™ —,-f;'- ' - . . W .i ' 4. gage 221 "jnsdSHIKg PISE. The drill boles define a Tertieal

boet of ore of oval er kit**-shaped outline, 1,000 in ncalmoi length; l, 350, fee t in maiiwa depth, md 5 to 185 feet thick."

' "If all ore ̂ carrying ovsr 90 per cent, aotallio iron bo taken into consideration, 'the onl sheet defined by the thirteen drill holes it

i w " * -

estinated to contain 2,250,000 tons* If ore carrying leao than 50 '

per cant, iron ia excluded, the tonnagp vould be reduced to 1,300,000

tons* The greatest fbserted band of ore in any of the holes ia 45 feet

j thick* It seer.8 likely, bovever, tbat the lever Units could be ex

tended considerably if deep boles like No.61 vere drilled on either

aide of-it*" It is estimated that the said hematite ore trill trferage

fron over 55 per cent, to 59 per cent metallic iron.i

A fflttjryeiirs eg), a large body of siderite wis disco Ycrod and

stripped, This siderite body is about 40 fieri rddc, ond extends f rea

the ofcstcrly bonndr.ry of top property westerly, for atont ?.,000 feet

to J/erko (or Keel) Lnke. It licr, south of the InnutUe ere fc,M\y.

5. Pag* 91, "JUmm HAvqy. A eider it e cmsiber sppenre tc. bo fairly

^ontinuoue nlon^ tne louth nido of the range, mid in the rpprr part of*

Uie siderite, next to the banded Billies, there is c corccMrntion cf

pyrite, quite cistinot, lut not Mfjj enoa^b to frrm pjritc err,

"In 1912 the Al#wa Steel Onrpcrption etrippcc end diotrrrt-drilled

a pfjrt of tbo jdcrt)0T.t ftinge in tlie fouytv w-w filth clcine froa ir9

end, roVGnlinn fx bpnd of ciderite, ?.,000 feet lone, ^ysteaatio

of ercti 10 leet of drill-ccro by tfce ornerc indicate the hiff.i-

tc of pid^rite to contr.io KB lar^ o percentr^e of iron ^3

the Helen, The lean pyrite pnrt siinilerly er^lysedj shove 7.17 to 55,05

per cent, sul^/r, or net rafficimt to const i tuts a pjrite ore," The

siderite, cir broy ip ab/r.'t oO fer* v-56e '..^ cVoit 1,650 for^ in Ira^h.

rlhe inar dig-^onO drill holes cbrit Ct)') f? t ir. t3r,ntb itiaicrt^d abc-ut*

5 ? CCO,Oi)D tons of ejdirite ere (H?po-1 of V-,* Ir^n Oro Son-; i

p; " I:/:.)

woui;. -*::e gmitest occcr?e" fcir.ci oi .-it 11 nny ci \**e holes lo '^ feet

thick. H 5cer.8 likely, hove ter, tbat the Iwer linits oould be ex tended considerably if deep holes like No.61 ter* drilled on either

side of it." It is estimated tbat the saift hematite ore *ill irferege

from oter 55 per cent, to 69 per oent.aotallio iron.i

A f**yyenrs sg), a large body of siderite vna discovered and stripped. This siderite body is about 40 ftrt uide, and intend* from

the easterly boundary of the properjjy westerly, for attrot 3,000 feet

to Parks (or Bed) I*ke. It lies aonth of the h Mm t lie ere body.5. Page 91, "BAJflJECT H^ffi- * siderite neaber appear a to be fairly

continuous along tbe 8)uth side of the rance, and in the rspper part of the siderite, next to the banded eillica, there la a concentration of pyrite, quite distinct, lw t not bltfi enou^i to fbra pyrite ore*

"In 1912 the Algo*a Steel frrporatidn atripp^d and diatond-drilled. - *

a pert of tbe Btrt3*U Bonge in the f our t L. and fifth olains froa the*

eaat end, rere&ling a band of siderite, 2,000 feet long, systematio

analysis of each 10 feet of drill~c*re by the orners indicate the hi^i- prade sheets of siderite to contain as large a percentage of iron at the Helen, The lean pyrite p&rt similarly s&elyced, shows 7,17 to 36.06 per cent, talpfar, or not sufficient to co&stitnta a pyrite ore," The siderite ore body ie about 60 feet vide and about 1,650 feet in length.

9he four dieaond drill bolea about 900 f t-1 in depth indicated about 5,600,000 tone of eiderite ore (Beptrt of the Iron Ore Oocttittee,192^ page 193.)

6. The solphur e)nsoiMd each year in Oanadinn Jhilp Mills and aoid plants is vorth abcut 12,600,000, The fretaan. process ttsea the fint

pyrite and pre-heated air drittn by a ftn into the famaoe there tbe pyrite particles are rapidly deooaposed at hltfi temperature. The

products Rsoond Into a 99® nd eonbuation olmniber, i^ere the sulphur it

completely oxidised. The gascea ore then rapidly cooled in a fire-tube

boiler, which ftnerates hi^-pressurt stsaiu One pound of tttaa is

,:; - ,:*'. - V ,. . ^: ! -- ' :-'^,,-. , : :

is ovtsined from burning on* pound of pyrites, sni this covers tbt cost of operating* Tbt gases produced obtain U to 12 per cent* of Sulphur Dioxide* The residue of i ion oxide con bs utilised sy ' tfr lffj sintering it* . . . ; - . . . *

7. Tbt Northern Bitftr, September 10th, 1936, page 6, gives a description of the pro con that will bc used by tbs Aldsrnao Oopps? Corporation Liaited, in treating its copper pyrits ore:"The process is s siapls one* The pyrites is broken dotn by chlorine, three rt** * ™ .

valuing Vita* being used. One outlet produces sulphur in liquid fora, and another, iron oxide*

**!fte concentrates froj one ton of ore assaying tvo per cent .copper and 35 por cent, sulphur, should contain opproxinately 36 Ibs* of copper, 300 Iba* of sulphur, and 600 ihs* iron oxide, in hddlttaa to the gold nnd allvor in both concentrates**1

8. Tho Hinornls lo or Book, 1935, page 1026, ^Itee the price paid

in the U.S.A. for j^awidian pyrites, containing nore than 25 per cent*

Sulphur, daring 1934, aa being x 17 cents p** unit or S4.30 pcv ton.

In Septeciber, 1936, the price paid for Old Rnn# Bessemer vaa 44*80*

The cocts of delivering iron ere fro* the Uarquette sbaft aims itas

?3.8DOO In 1933; bat thct included 40 cents fer taxes and 10 cents per

ton for royalties* The cost of nlning and traiiaportiiif; a ton of iron

ore frojt the chn.ft ninas in thr Car|ufitte Ran^ i*ould be about S3.31*

The pyrite frcm the LfcKny Jyrlto Property s^ould lw lees th*n ^3.31

fir n5.nin^ nnd trcncportntion; co that a price of f-4.69 per tf*n of

pyrite, carrying 36.57? sulphur, ot Lake rrie Porte, should furnish

an attractive profit,

9. ^Bir/; ths ilflorsic ^recces, cjich ton of pyrite oi\j mif^t possibly

give the follovicg roturns:

5SO Pounds c f .Talphtyr, 6 l ccat per Ib.e CO Po and s of Iron Oxide ^ 4.4 cents per le. 3*52

r Tt. l I.. t7* a

t .'r/aO^ i/gr oujicg uulO L'ti _____ l . VI

is a jwpld cne. TKJ pyrites is broken dom by chlorine, toeo Yol7fc)s*Uns boing used. One outlet produces sulphur in liquid for;i, an1 nn6t!ier, iron oxide*

The concentrates f raj cue ton of ore asr^yiug two por cent, copper and 35 por cent, sulphur, should contain opproxinataly 30 Its. of ooppor, 500 Ibs. of sulphur, and 600 -fcbc. iron axido, in nddition to the ftold and silver in both concentrates."

8. Tho Slnornls Trm- JBook, 1935, page 1026, Wfoe the prico paid in the U.S.A. for j^nrdisn pyrites, cot\Uinii^, ,nre than 25 per cent* Sulphur, aarin0 1934, aa being |i 17 cento per unit or M.30 per ton. In September, 1995, the prico pnid fbr Old Jfcng* Bfteeaer tee 44.80. The costs of delivering iron one from tt t Iferqnette abaft alnee va* ^3.8930 in 1933] but thet included 40'cents fer taxes and 10 cents per ton for royalties* The cost of mining and transportin# a ton of iron ore frog the shaft nines in the Eartyetts KaneP vould be about |3.S1. The pyrite froa the Ectoy lyrito Property should bs less than |3.31 for Dining and trencportation( so that a price of &60 per ton of pyrite, carrying 35.57^ cnlphur, at lake rrie Porte, should furnish

an attractive profit.9. TJeirg the JLldoraao ghnocees, each ton of pyrite ora fcigit posaiblj

the following returns:

530 Pound c of gulpbur, e l cent per IV. ftOO Pounds of Iron Oxide 6 4.4 cents per Ib.

29 Pounds of Jttne d 7,60 cents per It.Lue

In addition to fee deposits of pyrite, there is a deposite ef siderite about 25 feet vide and extending for a distance of about 1,000 foeU The eastern and of fee s*id siderite deposit bas been eh*\ged into uagpstite by tbe beat of an intrusive rook*JBSiySSl. On this property, ve bare a lerge iron formation lying in a tnmgi of green schists. Tht iron roob ara broken and poma, aUoving

(B)- ' -. , ' . . ! . : . '. ; . . .'. . -. ' ' , - - '

fro* paaaago to the descending mineral-bearing waters, - a con* ditto* favorable to tba oooctntratinn of *r i bodice lying in tht underlying ioperricms basbust Hcnttltt ora bodies should bo looked for under tba vat or a of Long ft r Outhtorteon take, and nsnr t h 9 plaot vbere rocVa break and swing northward, aasera fo li.Qoyftrgfl-- B \.-^1 * *T nB* .flnfl. of Cot^bftr^go^ or J/mg foks vhen

* The lens of older i tf le of miffioioat

eits to bo of oosntercial impartanco and the oro is of urratranl

oarr/ino; about 35 per eent, me tall lo Iron, ndnltticg oonce^ trot kay

by roactinj to 53 per cent*, beooninff then tn ore of fine quality,

with sone HBB concent u&eful for fluring purposcn. The *nn^r,5ti'j8

portions of the Una on the er.stnvn end io uf BiTill extent, being

Hbout 33 f 89 1 fide, und 00 fer t l^ngj bat it io otill lay-.^ en&^b to bs of eooDoi.iio vsluo. It le nlso ^uitc possible that thn iron nny

folio* slsng v^a plants of ih* intrunl\G rocX to consiOerrllo depth.

TJw Onpofeita of pjrito appear to bo of t promising nature, rnd war

rant exploration, a;; O7on a eroll body of rvjrchantnblc ^r^ ^m.dd bo*

Tfiln&hle, o^ir\Q to the fnrorable f o mat ion end looatioiu

10. VY.e r;?^ Ifcslan siderite vopsit hiss V?o^. drilleA to n d?pt"a of

about 2,444 foot, and it is ostinated t^ot in a dcnth nf T, 70) feot

Uiom air, fron 69, 000, 00 'J to 100,000,000 tr-,3 o^ iM-jra -e '-r-, indicated;

Qoe 1'as^s 64 md 87 in ^low-ir 147 ^f ?^o.ir.7 arolo.^icrl r^rics, by

Ti', H. Col lin s on the ilcJiipio^tor, Iron fa

11. T.'ie f oro {7:* in r; o ' -.*.v-:f

proa^otivo optionnrrs r^-e or^clya to h--7^ Vio jiroprirty s'x.-j

tV*ir win f-'ininj *?n ;;lnonrn r-nd r-~^l"j;l:its; n.-j-! to r*ly r:;*. i rely

on Thoir Reports ;' T icl iMVos^i.'^tti'T?.

D.iTO 'ihis 31st dny ^f July, A. .0.1 3^0.

42Ce2NE8839 CORBIERE002E CORBIERE (TJPifT) - ' -' .*fe**—' T&J "± ; t i| '"j-*,

,,~ j.,.., r,, . ., ,. ' ', * IV J~ . * ,J'

^ife'.T;-'*' ^ REPORT OK TrtS BfcOOiS tUlilES, T28-R25

;^v f.' - - DISTINCT or AMOUA, OHTARIOi } fey J. P. McKee

^''?; - ; ;''"'' l " .. ' bsneral

Location and Extent

The Brooks Ranges consist of throe principal areas of siliceous iron formation extending for three and one-half miles across the central part of T26-R25 in the general direction of N??0^* Pig* l* a map of the township at a scale of 2" equals l mile, illustrates the general position and wrtent of the East, Central, wid West Brooks iron formation belts.

.Access

Access to the ranges has been by manns of the trail and canoe routes marked on the map identified as Fig. 2.

History and.Control

Jalorc internet in the rnn s be^nn in September, 19^8, when a field party visited tl^ fit .tral ranpe s -.-i found outcrops of siderite in place. Subsequently, en exclusive pro s t.t; ci, ing concession was secured on the entire township by agreement with the Algoma Central Railroad, df'.ed January 8, 19A9. This concession ran for one year, wee renewed for an additional year, and io now due to oxpirc on January 6, 1951. Under tht? terms of this agree ment temporary control of unotaked ACR lands within the to'/mship was -secured.

in 19^9 it wac learned thet certain parcels of Crown land within the township were excluded from the ACR Land Grant of 1913. These parcels reverted from private ownership bad: to the Crown during 19/U* and 19^7. In February, 1949, Jalore personnel staked and recorded two blocks of Crown claims largely covering the West and tact Brooke iron formations. The claice were transferred to the company at the time of recording.

Fig, 3 is a map showing the position of claias now outotandlng in the township and also indicates the position and extent of Crown Parcels excepted from the ACR grant.

The discovery of the Brooks Ranges is obscure. It is known that Parcel 223X, covering the western portion of the East Brooks iron foroation was granted by the Crown to John Gamble in 1891* which is seven years prior to the discovery of the Helen and 21 years prior to the supposed discovery of the Brooks Ranges by prospectors working for the Algoma Steel Corporation.

A summary description of the ranges is givon in the Rt.port of the Ontario Iron Ore Coomittee, 192;}, and is quoted in full:

*\ft* 'S*'~,* ?\ ' " - * 'ij&M^-"'"ifete^-"' : --'' '.piiMi ' **-'" - ; .-^ ^ ..,":-./ - -'

-" " \ ',"~' " ' *. ' '"'V "ili i Vv'V .'"'v'"

"About two milefl north of the Josephine-Bartlett iron range, outcrop* of iron formation aro picked up in a line from east to weat f or about four uilea * The series of outoropa ia known locally aa the Brooka iron rangea*

'-- Th, iron formation ia eompoaed chiefly of granular, maaelve, aud banded allica, and in a subordinate proportion of lenaea of siderite and pyrite, uaually intermixed. Towards the easterly and f'Te are five such lenaea with lengths varying from 150' to 500' and with average widths of 15' and 25'* Tha moat highly pyritiaed lenaea run about 32* S, 43JC Fe, and 25Jf loss on ignition* Near the center of the range there are two lenaea of eidwrite, one 400' by 30' and another 100' by 45'* Towards the westerly end there are several lenaea of eidarite, the largest 400' long and 10' to 20' wide. One lense, 120' by 10' wide, ia unique in that it lies entirely apart from iron formation aa does the Magpie Mine orebody*" Reference} Z. L* Ooodwin for Lake Superior Corporation, 1912*

Sketch mape of the ranges were prepared in 1912 by Z. L. Goodwin for the AlgomA Steel Corporation. This work teas based upon fairly extensive trenching. Copies of these maps were made available through the courtesy of Mr. O. S. Gilbert of the Algoma Steel Corporation and are included as a part of this report. Fig. 4 ia Goodwini s Iron Range No. 3 or the West Brooks; Fig. 5 la Goodwin*s Iron Range No. 2 or the Central Brooks; Fig. 6 ia Goodwin'a Iron Range No. l or the East Brooks. All of the maps ar? marked to be at a scale of l1* equals 200', but it is highly probable that shrinkage of the tracings has changed this to be ln equals 220' for the present prints.

Jalore Exploration

Jalore exploration of the rangea was begun in the fall of 1949 with a limited amount of mapping done by J. J. Drury and W. J* Richards. About oi.e week was o pent on each of the three main iron formation areas, the work cover ing only a portion of the belts existing in each area*

Between December, 1949* and June, 1950, a program of X-ray drilling; largely for assessment purposes to hold the Crown clains, was carried out by Jalore personnel. A total footage of 2742' was accomj^.sned.

J. J. Drury has summarized a large part of the 1949 mapping and 1949-50 drilling in reports datod April 12, 1950, covering the West Brooks) and May 3, 1950, covering the East Brooks.

From June 7 to July 22, 1950, a party of four students with O. R. Webber in charge worked at extending the 1949 mapping to cover all of the known iron formation belts of each range. Maps resulting from this work, together with reports by Webber, are included as a part of this report and appear under the discussion of the individual ranges t

Easr

The location of the rance is indicated on Fig. 1.

Fig. 7 is a geological map of the area at a scale of l" equals 200*.

- 2 -

Geology

Exploration to date discloses the East Brooks range to be a 1*000* length of banded to massive siliceous iron formation striking N85OW. The iron formation is from 40' to 240* in width end dips steeply to the north at an estimated 75 to 80 degrees. It is contained within a similarly trending and dipping cone of acid volcanic rocks about 60C' wide that range in type through carbonatiied flows and tuffs to sericite s clist s.

Along the south contact of the iron formation exposures of nixed siderite and pyrite, with local heavy occurrence of pyrrhr '.ite, are found tit intervals along the length of the iron formation. In several places, the cone of iron mineralization is bordered on the south by a chloritic schist that is probably a cheared tuff* Where iron mineralization is not in evidence along the south contact of the iron formation and where the contact can be seen, tho bordering rock is a carbonatif.ed acid volcanic or a sericite schist.

At i* c western end the iron formation is terminated by a 200' wido diabase dike striking NSO0!)/. It appears likely th&t the dike is duplicated by faulting at this jpoint to account for its local width of ^00'. On its eastern end, the iron foraotion ends in e complex interfinrrQrinj with sericite schist.

2250* east of it5 western termination, the iron formation is offset 160' south by what is apparently a hidden f ault . The movement hf.o shifted the east block southward.

About 900' fact of the Uuliue out of t 1 e iron formation, end en strike, a trace of leached, siliceous, carbonetized rock is found ao a discontinuous ECHO one or two feet in width contained in the sericite sc^iists. This ixjne, together with a fev blocks of slightly iron mlnernlizod sericite schist float, found on the north nhore of the castenv-opt lake shown on ri.-.. 7, constitute the only evidence for a continuation of thr, iron fon^tion Bone to the eastward,

Goodwin's map of this range, Fig. 6, shows the dimensions of tho ore lenses Rs revealed by trenching to be from eatt to voet i s follows: 300' by about jO'j gar. of 200' j 150 1 by about 20'; gap of 950'; 400' by about 30'; zap of 600' ; 500' by from 15' to 25 'j gap of 125'; and 375' by fron :c' to 15'. Tho total length of all five lenses nnounts tc s]ightly less thor, half of the iron formation length as determined by Goodwin.

Jftlore marine* rather than shewing the mineralization as five lensca, now shows it as e'.p.ht spot localities th-t, ^ovevRr, do fall within the lens e areas of Goodwir. 'e rrap. There is Rood general agreement between the naps, although the frceh t.rtr.chcs 01 1912 allowed nore cr-phasis to be placoc*. mor. t/he iron mine-rail nation whnreoo in 1950 a broador vicv; was obtained c i' the entire local area.

Tho analyse? results of those X-ray holes thut oncounttrad ore show that the Pe cr^ide averages gcnersJ-ly Mgher then 35# Fe, with average Si Op in the HJt to 1A# range. The sulphur so far srages plus 10)S, bc.sed upon the diff- encc uetvreen soluble and total iron of individual analyses, Me^ligible traces of nickle have been found in composites of the ore holes*

- 3 -

Croaa 960110118 of the drilling* analyaea sheets, and core reclaaaifiea~ tlont by R* W* Uaraden are Included at the back of thia report*

Cocoluaicna and Reoonaendationa

The rang* is in many **ya similar to others in the district that are known to have siderite orebodiea* It differ* froci them mainly in having a narrower average width of Iron formation and in having a zone of sericitic Bohiata present in both ei dee of the iron formation vrather than only on the eouth, or nineralized, aide* Also, surface exposures and X-ray drilling tend to enow that there la perh&pa a greater proportion of atdphides present than ia uauttXly the c aa e with the better known end alroac*/ explored ranges lying eouthwwa.

The possibility of proving an orebody lies in establishing that surface ore zones have lineal continuity plus expanding widths within a reasonable mining depth. It ia believed that this ran^e offers sufficient promise of carrying a aiderite-pyrite orebody to warrant drilling to a conclusive depth.

It is proposed that the initial phase of drilling be done to a depth of 1000' with a series of seven holes beginning 500' e-'-st of the western ircn formation termination and progressing eastward with -iross sections every 500', Should such a program encounter encourrr,iny intersect.ions, further fill-in drilling could then be carriod out ae desired.

Li event that o. c onclusive drilling program should hevc to be deferred beyond the spring of 1951, it will become necessary to j jrforru at least one additional ye*r of assessment work to hold the eight Crown clairrs already staked. These claims have hac! one years work recorded and are ir. f.ood standing until ii&rcn l, 1951. Either ar. C.L.S. survey or 6.VO' of X-r&y drilling is suitable for one years vorkj at present, o:;ly a r.egliciblc amo'jnt of suitable work ia backlogged for these Crown clrins.

To obtain corapleto and thoroughly protective cleAm covera^'.c on thia range will require the staking of a block of four AC" c3aias eaat of the present Crown block -Jid further strip of six ACR cic^cs along the north side of the resulting block to protect the dip. The. tot;.l block would then consist of ei glit e en claixs as shown by Fig. 6.

In place of this staking, which would be required by January 8, 1951, it is proposed that an additional renewal uf oxclusivo prospecting rights for thia township be secured. Such a toove would also fit in with requirements on the Central Brooke aroa and with further prospecting required in the northern part of the township.

Central Brooks

date*

Fig. l shovs the location of the range.

Pig. 9 ia a geological map, scale l" equals 200', showing mapping done to

vi''-'

..•s v,

Geology

The Central Brook* range conaiate of a 4900* length of massive, banded, and breooiated siliceous iron formation atrikina HTOOW. It ia 250* wide on the east, 400' wide near the center, and diverges for 1600* on the weat end into two bands that are from 50* to 300* vide* It ia likely that dipe are steep to the north. The enclosing rocka are principally intermediate and carbonatieed volcanics, locally carbonatlcod and sericitic, lying on the north aide.

Local areas of siliceous siderite are found at various point*) along and within the iron formation, aee Fig* 9* The most extensive known area of this material lies on the north aide of the iron fornation near it B western end* No great degree of continuity has thus for bean established for any of the mineral ized areas*

At itc o Kb torn and the iron formation ia terminated by a diabase dike apparently striding NSOOtf at that point, The dika is at least 100' in width and may be the same one that terminates the western end of the East Brooks iron formation. Happing is not yot sufficiently clear to establish this point.

Iron formation outcrops at t i* western end of the ran^e cease elonp a roughly north-south line that is about 600* long. It is probable that faulting brings about this cessation, altiiough there is also a suggestion from the mapping that the iron formation is merely tailing out.

Thorn ..re c number cf di&br.te dikes crossing the Jron formation in a north-westerly direction. Goouwin's nap, Fig. 5, shows theec to be three in number, but 1950 mr.pping lo not sufficiently complete to check this conclusion*

Attempts to lodge ;.-ray holct along the northern iron formation contact where siderite outcrop tre the mont numerous were not succesrful. Other holes to date liave not encountered any favorr.hlo zones of .vdneralizstiori, with the exception of CD-9, which cut 61' (at 45 degrees) of siliceous siderite averaging 26.60 Fe and 27.54 SiC2, Cthor drilling along iron formation contacts encounter ed minor zones of extremely siliceous naterial containing some siderite.

Details of X-ray drilling are contained at tho back of tide report in th* form of crous sections, ui&lycec nlicets, and core reclassifications by R. W. Uarsdea.

Conclusions and Rccotuaendationa

This range is unlike either tho East Brooks or the established siderite ranges of the district, in that the beet exposures of mineralization found to date lie on tho north aid o of the iron formation. It is conceivable that tones of siliceous siderite on tho north side of Uie iron formation near its western end could improve with depth and becomo of commercial interest, also th* material cut by drill hole C3-9 lends encouragement toward deeper drilling in that arua.

-5-

vV" '

V; v Y la order to quide posaible future exploration of thia range by drilling I ' ~. to depth it ia believed thai a more complete and accurately controlled job of V surface mapping will be required next season. Meanwhile, it ia proposed that

.- : the area be temporarily protected by a further renewal of the exclusive pros pecting agreement with the ACR for thia township.

V fig. 8 illustrates that a block of approximately sixteen ACR claims would be required to fully protect this range and the territory lying between the l*s t and West Brooks blocks of Crown claims. The only work in hand that would suffice for a year'a assessment purposes on an ACR block of this size is the aeromagnetic survey of the township*

yeet Brooks

Fig* l shows the location of the range.

Fig. 10 is a map, scale ln equals 200', showing the results of geological mapping done to date.

Ooology

The West Brooks rango ie composed of four main segments of iron formation. Three of these extunc. in a broken lino over a distance of 5300* in the direction of N700 to SOOW. The wtcternnoet eegaent is quite thin tnd in thin respect resembles the fourth segment which strikes approximately north-south and is situated north of the main trend toward its western ^nd.

Beginning on the east end of tho range, the fir&t iron formation segment is found at a point 3200* west of the Central Brooks, It consist* ?f a 900* length of massive siliceous iron formation averaging 70' in width and striking ITCO"W, Dips are about 75 degrees to the north. Lnclosia^ rocks are heavily carbonated schists containing sericite and chloiite, with a particular distinc tion betwoen different sides of the iron formation. Evidences of mineralization are confined to thin local traces of siderite, in tho form of poor banding within the iron formation. At its eastern end the iron formation dieappe&rs into a swamp and could not be found by traverses beyond this point) the western end is cut off by a 4p' to 50' wide diabase dike striking N350*'.

Goodwin's map, Fig. 4, showo a short length of iron formation occurring in the 800* gap between the f^rst and second segments of iron formation. Thia piece It&a not been located by present investigations.

Tho second iron formation segment has an observed length of 1300', averages about TO 1 in width, strikes K'SO0**', and dips from nearly vertical to 60 degrees north. Enclosing rooks are quite similar to those found at the first segment, consisting of heavily carbonated volcanics with areas of sericite and chlorite BChidts. Locally, email stringers of sideritio material are found in the achiata on the north side of the iron formation. Thin zones of siderite and siderite* pyrite mineralisation are found locally along the o-ength of the iron formation,

,:, principally at or near the north iron formation contact. The iron formation ia Y terminated Abruptly on the east, presumably by a fault, and disappears into

Dinghy Lake on the west* f'V- ' ' ; 6

The third iron formation segment is picked up 1500* beyond the ending of the second in the general direction of its strike, NTO^* This iron forma tion was traced by sparse outcrops for about 850'. It appears to be quite thin, on the order of 10') and is chiefly made up of silica with a little pyrite* A trace of siderite and pyrite was found on the north side of the iron formation near its eastern end* The iron formation is bordered by a swamp on the north and by a carbonate-ottrelite schist on the south. Ankerite is reported near the western end of the iron formation*

The fourth iron formation segment is located northeast of the third segment as shown by Fig. 10. This segment is well banded and consists of inter- banded silica, siderite, chlorite, and magnetite, locally contorted and brecciated. The iron formation was traced for 600' in the general direction of slightly east of north. Carbonate schists are found east of the iron formation, and chlorite schists on the west. A chloritic diorite dike is reported to cut off the north end of the iron formation.

Between the second and third iron formation segments described, and slightly north of a strike line connecting then, a cone of siderite mineralization 200* long by about 15' wide was found as mapped by Goodwin (Fig. 4). This zone comprises siderite mixed v,ith chlorite and quartz and le enclosed by tight contacts of eericite-chlorite schist on the north and carbinate-ottrelite schist on the south. Iron formation ie absent.

X-ray drilling on this range has been confined to the second and third iron formation segments, plus a short cross section in the gap between these segments. On two cross sections ^00' apart Just cant of Dinghy Lake, 25 1 intersections of siliceous siderite wore obtained. An intermediate hole between these cross sections was blank, but c id not reach iron formation and therefore was not conclusive. Other holes were blank or located minor evidences of siderite mineralization.

Cross sections of the drilling, together with analyses and core classifi cations by J. J. Drury are included at the back of this report.

Conclusions and Recommendations

The West Brooks range does not particularly resemble either the East Brooks or the major siderite carrying ranges of the district. It has in common with the Central range that the chief evidences of mineralization are on ths north r.idu of the iron formation. The discontinuous nature of the iron formation bands and the thin widths of the segments located to the west and northwest are characteristics not usually found at other principal ranges. Some encouragement of suitable conditions for ndneralizntion is found in the sericitic and chloritic schists unclosing the 'irat and second.iron formation segments, and is borne out to sonic extent by the finding of a 25' width of oiliceouo siderite possibly 500' long, on the north.side of the second segment. *

Inasmuch as there is enough suitable work backlog^ed on the Crown claims covering this group to hold them in good standing until March l, 1952, it is proposed that plans for further exploration be deferred for the present. The range can then receive further consideration in the light of such knowledge and ideas as may be gained within the next year*

JPUtFESSept. 19, 1950

J.P.lfcKee, Geologist

42C02NE8839 CORBIERE0825 CORBIERE 070 ffa l OCft

tgr u. K. Webber

sap the Central Brook* iron rang*.

Location-— TWp* 28, Rang* 25* Miohipicoten Area.

f The 'area consist* of a Bon* approximately 5000 feet long and 1400 feet wide running in a north-veeterly direction* -

Time Period June 14 to July 11*

Fer*onnel-"4lebber * 'Young, Evaa*^ Graham, Turner.

Method All mapping was at a scalt of l inch equal* 200 feet* An east-west baaelino (the Central Brook* Extension) was cut from the stream between the Central Brook* and Eaat Brook* and extended east for a distance of 3200 feet, with a 400-foot offset north at 16 00. Travers os were run off this baseline at 800-foot intervals with additional traverses at 400-foot intervals on the iron formation.

The Central Brooks area vaseqpped from a baseline cut in 1949.

Additional traverses were run to the west of the Contra! Brooks area connecting to the lake. The lake ehoro geology of the two lakes to the vest of the Central Brooks was ale r mapped.

Geology^ General

The area mapped is crossed by iron formation trending K 70 W. Several diabase dikes cut the iron formation and one of these, trending N 75-60 W appears to split the western half of the iron formation into two sections.

Another diabase dike on the east and of the Central Brooks cuts off the iron formation on the east. This appears to be the saae dike which cuts off the East Brooks on the west tmd. The East and Central Brooks are probably part of the o&rne range which has been faulted r long the line now occupied by the above mentioned dike.

Carbonate rock and carbonate breccia form the major part of the rock north of the iron formation, and carbonate and intermediate volcanics occur to the south of the iron formation.

DiabaseSideriteI^rrit*Iron FormationIntermediate VolcanicsAcid Volcanic*

PyroclasticsSericite SchistCarbonate RookBrecciated Carbonate Rock

Intermediate Volcanics

Central Brook* -G. R, Webber page 2

Intermediate Volcanics

Intermediate volcanics occur south of the iron foraation tone and also tp the north-ea*t. They are oarbonatised to a large extent and grade into carbonate rock.

'. * '

Acid Vbloanica

Moat of the acid volcanic rocks in this area are represented by a massive, earbonatited rock which occurs to the north and south of the iron formation and in the split between the iron formations on the vest end. ttuch of this rock has been brecciated to fora a brecciated carbonate rock in which the interstices are filled with aiderite. In places the brecciated fragments are sericitic*

Iron Formation See Economic Geology

Siderite m m *

pyrite " " "

Diabaae

Several diabase dikes cross the area with a general north-west trend. They have not ae yet been traced eatiofactorily. Goodwin*e interpretation apiefera reasonable except on the western end where some of the dike rock does not fit easily into his interpretation. Goodwin does not enow a split in the iron foraation.

Economic Geology

The iron formation consist* of banded, massive and brecciated silica with minor associated magnetite, pyrite and siderite. It has an average width in the eaat end of approximately 300 feet and a total length of about 5000 feet. On the weat end a eplit occurs in the iron formation for a distance of approxi mately 1600 feot. The rock between these split limbs of the iron formation is carbonate rock and diabase.

Three cones of inderite and ninor pyrite were located in the iron foraation. Two of these are in approximately the relative positions of Goodwin's siderite Eones.

The easternmost none is south of 16 00 on the eastern baseline and is about 30 feet wide. The length of this tone is obscured by overburden.

The central tone of siderite is on the north side of the north limb of split iron foraation approximately 300 feet northeast of 6 00 and extends southeast for a distance of about 400 feet with a width of about 40 feet. The siderite is aixed to a very large extent with siliceous iron formation and ia not ore throughout the cone outlined above*

Siderite occurs on the west end of the north limb of iron formation and crosses the baseline at l f 00. This tone extends nor.h-vest along the cliff face mixed with iron formation. The mixture of iron formation and siderite can be picked up sporadically for a distance of about 200 feet*

:--TS5TVi.:!u j?*}. -".. - ' '-', -! - ' .- . '" .. '' ,. .- . f^^*:'"'"'VV-:. ; l. '" '' '"'- '" : V . 'V

Central Brooks - 0. R. Webber . Ps^e 3

Minor occurrences of siderite are present in various places throughout the iron formation.

" - * */ .""J '' , -' ' ; " : *is msSooiated with the sideritic*

k

Magnetite is present in soao of the siderite and also occurs in snail stringers in siliceous iron formation, notably 300 feet north of 28 00 on the eastern baseline*

Conclusions

1. The siliceous Iron formation has a total length of about 5000 feet and a width varying between 300 and 400 feet* It is split on the west end for a distance of 1600 feet.

2. There are three main *onos of sideritet-1. south of 16 00 on the eatt baseline (approximately 30 foet

wide).

li. 30C feet north-oast of 6 00 (400 feet x 40 feet including a large intermixture of banded silica).

ill* At J. CO on the western baseline (sporadic occurrences picked for approximately 200 feet).

Recommendations

1. The dike system in this area deserves considerably nore attention, especially in the west end of the area. This attention should be given at a tine when the leaves ore off the trees*

2. More X-ray drilling stxmld be done in the vicinity of drill hole C.B. K) And also on the siderite lone 3Cx feet northeast of 6 00.

3* Several long drill holes are necessary to discover tha extent of the body at depth.

42C02NE8839 CORBIERE002P CORBIERE

DENT! GEOLOGIST; sic.

. -. -V

080 THE WEST END

OP THE

CENTRAL BROOKS IRON RANGE

By D. H* Richter

INTRODUCTION

The west end of the Central Brooks iron range, T, 23, R. 25,

Michipicoten district! was mapped in detail by the writer and L* B*

Halferdahl during the 1951 field season. The primary purpose of

the work was to determine the possible structure*

ROCK TYPES

ACID FLOWS AND PYROCLASTICS - Light colored acid type flows

and pyroclastics, that are highly schistose are found on the north

side of the iron formation and apparently underlie it. The breccia

forma a gradational horizon between the acid volcanics and the iron

formation*

IRON FORMATION - The iron formation exposed at the west end

of the Central Brooks iron range is usually a highly brecciated

and folded type. The few outcrops which showed typical banding

were well carbonatised. The brecciated iron formation is also

well carbonatized- carbonatization filling spaces between breccia

fragments. At the extreme east end of the intermediate intrusive

and in the vicinity of the diabase, silicification of the breccia

has taken place*

Siderite, which is quite siliceous, was found on the northern

side of the north fork of the iron formation. Minor amounts of

siderite and pyrite are also locally abundant throughout the

m

m

'r iron formation* Secondary magnetite is common where the iron

formation has been cut by diabase dikes.

The iron formation is highly sheared and brecciated near the

intermediate intrusive contact. In places the material along this

sheared contact is a black slatey rock with a moderate amount of

sulfides.

Intrusive or flow breccia underlies the iron formation on

the north. If this material ia an intrusive breccia or gradation

from acid flowa to iron forration then the acid flows and pyroclastics*-,

are the underlying member. The iron formation is overlain by

intermediate flowa and in places by the Intrusive or flow breccia.

INTERMEDIATE PLOWS - Greenish-gray, fine grained flows out

crop on the southern side of the south fork of the iron formation,

INTERMEDIATE INTRUSIVE - Thin rock occurs majnly between the

north and south forks of the iron formation and also in lesser

amounts to the south of the iron formation. ( See map which

accompanies this report) It is a very hard, dark greenish-gray,

medium to fine grained rock, that in places has a diabasic texture.

The outcrops we massive, with a blocky structure similar to that

found in the later diabases. The rock is fresh, not schistose and

usually free of any lineation except where in contact with the iron

formation. Considerable amounts of sulfideo are visible in the

rock,

INTRUSIVE OR FLCW BRECCIA - The breccia is found mainly on the

north side of the iron formation. It is a strongly sheared and

carbonatised rock , with little or no primary structures preserved.

The actual contact between the iron formation and breccia and acid

flows and breccia is very gradational. Likewise where the breccia

is found on the south of the iron formation the contacts appear

.ft'^i'Z.". i -v -* i ''-- ' W.?'".: -

SA--JV -.i?; - ..' ' ' '

t'-'* ''t : t ~ -

^" ' ^"l - 'l k "'

S?1"^K ' "-"' -

^jjjj^i"^- !C.Vr ::v~-to t* gradation*!*

, Whether this breccia is due to the Intermediate intrusive or is

actually a flow type breccia and a separate horiton was not determined*

UNCLASSIFIED SCHISTOSE AND CARBONATED ROCKS - At the eastern

end of the intermediate intrusive is a very hard, dense, light brown

carbonate rock* The rock is very massive, except near the iron form

ation contact where it is strongly sheared* It is possible that it

is a part of the intrusion that has been almost completely replaced

by carbonate*

DIABASE - Cutting all earlier rocks with the possible exception

of the intermediate intrusive are numerous diabase dikes. These

dikes are all coarse grained, dark in color, and have the usual dia

basic texture.

Due to their discontinuous nature, the dikes are very poor

horiton markers,

i STRUCTURE

On the following page are diagrams showing the possible structure

at the wast end of the Central Brooks iron range.

Evidence used to arrive at this explanation is as follows:

1. The widening of the iron formation at the west end is evi

dence for a fault nearly paralleling the strike and dipping to the

north. The hang J Jig wall has moved down and to the west,

2. Siderite is exposed on the north side of the north fork of

the iron formation and from di amend drill data siderite is found on

on the north side of the south fork. This is further evidence for

a fault as described above,

3, Intrusive characteristics of the rock which is found in

the split between the iron formation*

U, Highly irregular contact between iron formation and

wall rocks is evidence for intrusive*

v^J0; VIJC&MS SHOWING POSStBUS STRUCTURE AT THE WEST END OF THE*ke. *fr~*-~ : : - CEHTBAL BBOOKS IRON BANGS

JV

^-.t. - V--.^Tt Vv"*fA

Fig,l Block diagram showing formations before faulting.

Fig. 2 Block diagram showing formations after faulting.

Pig* 3 Crosa section through fornations after faulting, look ing Mat,-

Fig. k Cross section through formations after faulting, in trusion, and erosion, looking east.

i^M^ 1 5- Ternary auceeaaion of pyroclaatiea-acid flows. Iron ^'- {, .

.' formation, and intermediate flown, tends to rule out the poe-y "- ' ' ' *----aibilitj of a folded structure.

Josephine, Ont, July U, 1951

'S^SSH^^^&f^-**rt. t 'i:'"?'' '--'

'- :' ' i v - ' -;.V-' •••"f /- . .

4 -"- '- \-

: Oiilf

o*t!-

iiiliii ti :tj

i

i X-Nj 0 -,

i*

j

^S^?;^---t.-;f".-t-v:'-.':.--'t^!^^^^.-.'-'-:-. "V-.- ^"' -.^-^ •'•- -'-^ ' " K;: v.:-^^X'Sf:- i4!?V*Cw*^^^i*^*a7^S^^:^'"^"^r^ v;,",'": -" V V - -'S' - "" :"~ ^^:- ;: -:^'^^'^^P^^^^l^:^-~'\, Vv:.ri ••.'- - .''.'•'.-' ' CEKTSXL BROOKS -" '. ••".••-- ' - " \ '''^;^:.*?**.:'^-^'- ;

* ' * ' J-', 1 t -' J-^-" • --"•' -. -i

Cross section, looking approx. N65W, located approx. 165' south' of k 1600 on the1950 C.B. baseline, or 1350' west of the eastern dike termination of;thevI.F.

Scale: 1" equals 50'. 66V ,

-

CB-l ...-'""

45, approx^.255

/' s ^/y s-•'\v x.---•"^ ... .,.--' VV'x\̂*

.

;1

i

1

, ,

lj

-.:' , -^ '

-.V : ' -"•..•^-1" -.-j. -- : ... .. ------ .- -. ' -.-- . -vi,-,--- . ^'"Jnr.--JtS4

',-" ;^ : ^ ;; :'-^^'S^^:: ci^8^Ica^ ' : "; " , : ' " ' ' ' "'' - ' ' ^ :,- "." :'" "" ' ^- " "V ' t:. ;,'^--'. - V-' - ." " -. ' w," * - ' -' " . . ' ' -' - . * '- -.'

ra CB-i0- Ji: I.F,, w/sdM siderite. -40 : Siliceous siderite.-56 : I.F., occaisional thin stringers of siderite. f

Sol Fe Tot Fe SiO-

25J-30 : 20.56 23.41 33.02-35 : 24.18 26.18 27.60-40 : 18.94 22.64 27.00

,

i

t1

i

;jjijip

^ \ ^^ J^1 1 r?tJ^' , - - - - - . - -.j';

-v.-:VV--i. '. j-.,/-';. . •-••" . •••... -:. -. ',.^,.^^^.^^^,-r-M^^MMM^KB^M^^B^^^^^B^^^^^B

srO-iSsiJ"'•*V...-x**f^:v

^i^^•."*^

" " " ' -* -*"j. -- r -'.T*.s:•* - . v-'

"

l. lt--3li*iijii ? *l(l'

-

;.-;.

^B^B

: -. --.:;x:.^v^:--,^^.^:--g^r^^^^-^^---V:^

rvr: nana i ̂ i*r*^''.'.S..iSJf^'chi -^i**!*'WV i iwi' A^ NkiiS"Cross section, looking approx. B8CW,1950 C.B. baseline, or l630( northwesterly of the eastern dike termination of the' "

0-90 -i' .Ch^oritic'and sericitic schists, w/adnor carbonatization. -1Q3: I.F., w/occaisional thin bezels of siderite.

Scale: l" eqials 50'Ho Analyses.

CB-245 approx. S1CW

fe

i Of l -^LW

C

Cross section, looking approx. N30W 1950 C.B. buelijie, or 2000* northwesterly I.F.

••*?--*

'.VV

f-iB

-' •-'1 "

^^B

^V

'-r

;te

!tf*i;'V.,.-H

•a."

•'•fl.'..^ i .K

' -

. Crossi section/ looking approx. "'ll^^ilocat^yipprp^^^^C'^^iJdp. ,-; 1949 CiB. baseline, and on the 1500 section; or 1700' east of the western'ending'T ~~ - t* A.*.'^". f **.--. ' "Vv V . ' - -. , -; . ' , , * . .... - . - -'.. ' ' *;--,ij "' . ,. '"". J^ f.;. ,..'" k i. "- :."lV . - l . : -' ' "

Scalei -1*- equals 50*

CB-5 V - 30'approx. S10W

CB-53O approx. SLOW

DH located 15' SE of 500 on the 1949 C.B. baseline; or 475* east of the western ending of the l.F.

DH CB-6

0-26 : Orerburden. #

Hole abandoned.

DH located 340' NW of 500 on the 1949 C.B. baseline; or 775' east of the western ending of the l.F.

DH CB-7

0-lfl : Orerburden. #

Hole abandoned.

BKS^^^y^""" !re^li^fe : - CVv~ -' -ip'Jw^'ib'"''' • •,~~:- :- ~' •••, -iIppi'X-:*0 ;~ ~'' ' "

C-^ -

•;;;'^.-O

t

i

t

o

rv.-.;-.--. - ' "- "'-- '-" o- ', ' '^^^plj i-H.' ' -: ' - " ," '" v ' --- '' ' "' i'-'J' i 's 'V

: " ' " * * '* .."^ " -* . - ' ' - '*

- ' - ' " : i"- ' " , '

CEHTRAL BROOKS

Cross section, looking approx. N60W, located approx. 15* SE of 225 on the1949 C. B. baseline; or 350* east of the western ending of the I. F.

Scale: 1" equals 50*i p̂J i

CB-9 CB-845 approx. S30W 45 approx. N30E

•SS -P~~~"""VX^ * **

7 \^v. ••V \^s**- *^v ^x**^" * - - \f~

f '0'^ N.** \0*' ~ ~ " ~ ~

7 * * ^v ^S ^ X Xv J**'**

y' '"""o "" N^Y: X S ^*

S^ *'^

"••"^ '"j

1

DH located 50* SW of 80 on the 1949 C. 3. baseline; or 2001 east of thewestern ending of the I. F.

.

^T^:.'?8Sffi8•?- v.- :^-, : .'-: ..'-.:^5i?f^j

' . . •••*-- ' ' - ' '-'' r'''^^

, - 1 ' *

DH CB-8

0-10-16 -30

f 1-43-78j-81

DH CB-9

0-24 :-90 :-100:

29-30..35"™il\/

^f*^

-50-55-60-65-70-75-80-85-90-91

29-90

DH CB-10

0-19^

icS^^^SEa^^*v'v-?'^'^.''i^?:; -'-- ; " '"^•"'•'••'^'v^*..*^ ^' "* "'^p^p^s^v. ; ,.--, r- -r - -V-; . -*. -;-- ,-- ;- ^^-*--^-. . -v.^^JS/iyVr.^;.-;-. -. ,- -•- ; - ' - . - • ^'[^••-\.?^-- ;

.Classification and Analyses

Sericite schists, w/mlnor siderite.Similar to abore, but weathered. Siderite, w/adaixed sericite and chlorite.Mixed chloritic and sericitic schists, w/mlaor siderite.FG chloritic dike (?), locally sheared.Diabase. #

No Analyses.

Sericite schist.Siliceous sideriteI.P., w/thin siderite bands. #

Sol Fe Tot Fe SiOo

26.06 28.99 20.7620.97 22.67 36.4825.83 28.53 23.3426.99 30.84 14.3426.06 29.69 20.8619.67 25.22 32.3024.67 26.91 23.4224.14 26.52 27.7619.28 22.21 39.0623.98 26.60 29.0019.82 26.91 26.3023.75 26.22 28.2623.90 26.45 30.7614.27 18.81 41.50

23.30 26.60 27.54 (Calculated Average)

: Sericite schist. #

Hole abandoned due to motor breakdown.

\/*"\

i \ . f

LaW^

*;fS|jlj-'' "- y^^B-

'- , - -~*?: ^^K

"7'-.^B.- ^^K

BKB̂̂̂

B^•'

^BB̂BB̂1^H^H:

-~ ^^^K

•H: B^^K•^B•^B^^B^^B^^BB^B^HB^B^^B.B^B^^B^BB̂B

^B

B̂BB̂H

^^B^B^KBBB^Bm

/\ ^^^M d^fc m̂ ^m*^POJVI ̂ F* ^*^1F

xY */

Brooks Prospects.

Main Metal:

Location:

Geology:

A) East

Economic

Hole #

EB 1SB 2

it

EB 4EB 7

it

EB 8EB 11EB 12EB 12EB 13EB 13nn

Brooks -

Features:

# total

41.3022.3123.0938.0843.0017.9444.7732.1619.3524.1722.6430.6333.6635.20

. . ,- . ———— ———————————————————————————————— - —————— —— —— —— ——— -i

Jalore Minir 42ca^6^ CORBIERE^ CORBIE 090

Fe.

Central part of Tp. 28, R. 25.

The area consists of interbedded acid to basic lavas, pyroclastics and iron formation, with associated pyrite and siderite striking generally in an east-west direction and dipping steeply to the north. Three main sections are known.

(Location: East-central, Tp. 28, R. 25)

Algoma type iron formation.

The iron formation is a "silica type" with lesser siderite, pyrite and pyrrhotite. In 1949-50, 18 holes were drilled totalling 7,842.5 feet. The results of drilling showed low grades and that width decreased with depth.

Assay results for the drill holes are as follows: Not all holes were assayed:

Fe Width Hole # ft total Fe Width

60 feet EB 14 18.72 9.7 feet25 " " 27.08 20. "5 " EB 15 18.87 34.4 "

18 " " 33.43 5. "23.9 " EB 16 36.98 31. "13.5 n EB 17 37.73 34. n23.7 " EB 18 20.36 23. "21.5 " 27.63 4.5 n36.5 n8. " Average grade: 30.96J6 total Fe

10. " Average width: 19.6 feet10. "5. n

10. "

- 2 -

The iron formation varies in width on the surface from 40 to 240 feet and extends approximately 4,000 feet, with 5 zones of pyrite and associated siderite. These smaller zones range from 30 to 40 feet in width and average 200 feet in length.

History: 1891 John Gamble was granted a "parcel ofland covering the western portion of East Brooks.

1912 E. L. Goodwin: Geological mapping and trenching for Lake Superior Corp oration under contract to Algoma Steel Corporation.

1949-50 Geological mapping and drilling by Jalore - 18 holes.

B) Central Brooks: (Location center tp. 26, R . 25)

Economic Features: Algoma type iron formation.

The iron formation consists of massive to brecciated silica with minor amounts of magnetite, pyrite and siderite present.

The average exposed width is about 300 feet and the total length of the banded silica formation is about 5000 feet.

The zones of siderite and minor pyrite were located in the silica. The siderite is mixed with silica throughout.

Ten (10) drill holes were put down totalling 598.5 feet. Only 4 were assayed:

total Fe over 14.5 feet, total Fe over 13.3 feet, total Fe over 5 feet, total Fe over 61 feet.

CB-1 23.CB-3 21.19*CB-4 15.24^CB-9 24.6555

Average grade: Average width:

23.53# total Fe. 23.5 feet.

History: 1912 E. L. Goodwin for Algoma Steel.Trenching and geological mapping.

1949-50 Jalore Mining Company.Geological mapping and drilling.

C) West Brooks: (Location west-central tp. 28, R. 25)

Economic Features: The siliceous iron formation on the West Brooks claim group is in several segments. With one exception the iron formation bands have a general east-west strike.

- 3 -

Development:

References:

The segments show evidence of being separated by faulting, at least in one or two places, instead of being lenticular in character. One narrow band of iron formation has a north-south strike. The iron formation is in contact on both the north and south with heavily carbonatized and sericitized volcanics. The siderite and sulfides found on the West Brooks so far have been narrow bands and stringers mixed In with the iron formation and no commercial quantities of iron ore have been found.

Of the four segments, 3 appear to be the same stratigraphic horizon.a) b

Easternmost 400 feet long. Central 1800 feet long. Westernmost 1000 feet long. Total 3200 feet.

Widths vary from 4 to 150 feet.

The fourth segment strikes north-south and is 1000 feet long by 40 feet wide.

Drilling by Jalore includes 12 holes totalling 1,496 feet. Holes assayed are as follows:

Hole

WB-2 WB-4 WB-6 WB-7 WB-11

o Fe (total)

9.4129.4522.0325.1621.58

Width (ft.)

12.23.524.7526.25.

Average grade 22.86# total Fe. Average width 20.65 feet.

1912 E. L. Goodwin - geological mappingand trenching.

1949-50 Jalore Mining Company - geologicalmapping and drilling.

(1) Iron Ore Committee:1923 Ontario Department of Mines.

(2) Collins, W. H.; Quirke, T.T., Thompson, E, 1926Michipicoten Iron Range. Geological Survey of Canada Mem. 147

- 4 -

(3) Moore, S.S.. Armstrong, H.S. 1943: Ontario Dept. of Mones, Vol. LVII (47).

(4) Shklanka, R.1968: Iron Deposits of Ontario, Mineral Resources Circular, Ontario Dept. of Mines M.R. #11.

ODM map P.184 Michipicoten Area - Geology 1963 by A. L. Goodwin: ln-2 miles.

ODM-GSC map 2192G: Aeromagnetic series 1"-1 mile.

GSC map 1972.

Assessment files, Sault Ste. Marie, SSM-1254.

Q Q Reconnaissance Mapping in northwest Half of T.28,R25.

Volcanic rock* consisting of basic and acidic flow^joutcrop throu ghout the area. Basaltic flow* hare been reoggnised in the places as being albitised (turned into spillltes). Local agglomerates and tuff* have been observed especially between basic and acidic lavas. In the northeasten*part of the area, an aplite dike (containing lenses of quarts generally It/long by 2" wide, as teen in cross-section) cuts irregularly across ellipsoidal basalt.

Bands of siliceous magnetite up to 15'feet thick occur locally in the b*9 io flows. These bands usually strike northwest and dip vertical ly, the general trend of the rock* in the area being east-west with probable curvature toward northwest-southeast. Such bands are believed to be responsible for the magnetic anomalies as shown on the accompa nying map. One anomaly, however, would apparently be caused by Jisseminat d ted magnetite in basalt*

A carbonate sone (about 1600* wide) is present in the southern part of the area. Gradation can be observed from acid volcanics to car bonated acid volcanics to sericite carbonate schists locally containing a green micaceous mineral, probably ottrelite (See E.S.Moore, O.D.M., Vol.55, Part k , 1946, p.43.)* Carbonatization, however, does not seem to be restricted only to acid volcanics a* this metamorphism is also present locally in basic flows.

A few narrow bands of siliceous siderite have been located in the southeastern part of the carbonate cone. It is possible that these bands constitute the western extension of the West Brooks iron formation. Further investigation should be done from detailed mapping.

F. Dubuc, W. Richards.

June 22, 1950.

JUN If) MB

RESIDE! GL-STL

-

xv

4aC82NE8839 CORBlERE082S CORBIERE 110

THE EAST AND CENTRAL BROOKS IHCW RANGES

By

J* C. L. Graham

42C02NE8839 CORB l ERE*8l25 CORBIERE 110C

pfpgx

Introduction ••••••••••••••••••••••••••••••••••••. lTopography ••••••••••••••••••••••••••••••••••••••* 2

The East Brooks Iron Range ....................... V

Location •••••••••••••••••••••••••••••••••••* *f

Method of Mapping ••••••••••••••••••••••••••* U-

General Geology ••••••••••••••••••••••••••••* 5

Stratigraphy ................................ 7

Economic Geology ...................*.*..*.*. 8

The Central Brooks Iron Range .................... 10

Location .................................... 10

Method of Mapping ..........*......*......... 10

General Geology ...••...*.......*.......*.... 10

Stratigraphy ................................ 11

Economic Geology *........................... 11

Conclusions .......................*.............. 12

Bibliography ...........*......................... 13

INTRODUCTION

The ranges discussed in this report were mapped by a party

of four men In the employ of the Jalore Mining Company Limited.

The members of the party were G. R. Webber, Senior Field

Geologist; W. L. Young, Senior Field Geologist; S. W. Evans,

Junior Field Geologist; and the jfpMMr of this report. Although

the writer was a junior member of the party, he assumes the

responsibility for any statements In this report regarding the

origin of the iron formation and siderite.

The Jalore Mining Company Limited, a totally owned sub

sidiary of the Jones and Laughlln Steel Corporation, Pittsburgh,

U.S.A., has kindly permitted the author to use the information

available on the East and Central Brooks iron ranges.

The author wishes to express his sincere appreciation to

Mr. J. P. McKee, Chief Geologist of the Jalore Mining Company

Limited, and to Mr. J. J. Drury, Senior Geologist of the same

Company for their valuable assistance.

The Helen Mine, which was discovered in 1898 was the first

important Iron property In the Michipicoten area. Within the

next two years most of the other iron ranges in the district

had been discovered. The Brooks ranges, however, were not

prospected until 1912.

Brown oxide ore, which was weathered siderite, was mined at

the Helen Mine by the Algoma Ore Properties from 1900 until

1918. It was not until 1939 that iron carbonate ore (siderite)

was commercially mined. This mine Is now one of the larger iron

ore producers. The annual tonnage mined is approximately 1.5

million tons.

- 2 -

From 1911 until 1923 the Magpie Mine vas operated by the

Algoma Ore Properties. This mine produced a total of 1.5

million tons of siderite.

The Brooks iron ranges have a very obscure history. The

first known fact is that the Crown granted the vest part of the

Central Brooks Range to John Gamble in 1892. All of the sur

rounding land vas granted to the Algoma Central Railvay. It

vas not until tventy-one years later, in 1912, that a prospector,

vorklng for the Algoma Ore Properties, discovered the Brooks

Ranges.

The Rrnges were later mapped by E. L. Goodwin. His maps

vere used to some extent by the Jalore Mining Company Limited

during the sunnier of 1950, and it vas found that Goodwin's

work vas generally accurate.

No further work vas done on the Brooks Iron Ranges until

the Jalore Mining Company Limited commenced field operations

in 19^8.

TOPOORAPHY

The land rises rapidly from Lake Superior to a height of

960 feet at Wava. The slope decreases greatly north of Wawa,

but the flatness is obscured by the rugged topography.

The relatively harder rocks in the Michipicoten area,

such as diabase, iron formation, and diorite intrusives form

very prominent ridges often rising 250 to 300 feet from their

bases.

-3-

McVelgh Creek, which runs parallel to the Algoma Central

Railway north of Eavk Junction, drains the eastern part of the

east Michipicoten area. The Magpie River drains the central

section which extends as far west as Wawa. Both these waterways

drain into Lake Superior* The lake drainage in the area is

largely controlled by beaver dams.

The western part of the Bast Brooks Range is terminated by

a large, diabase knob which rises very steeply from lake "A"

(see the map inside the back cover) to B height of approximately

150 feet. The height of the ridge to the east of this point

decreases due t" erosion, until there is no ridge at lake "B".

East of lake "B" the Iron formation becomes a 3teep face along

the north shore of lake "C".

^ The Central Brooks Range forms a ridge which rises steeply

from lake "D" to a height of about 2?0 feet. This ridge also

decreases in height to the east until at creek "E" it is

approximately 15 feet above the surface of the water (see the

map inside the back cover).

On both ranges the bush is extremely dense, and thick,

organic overburden obscures most of the iron formation.

THE EAST BROOKS IROTT RANGE

LOCATIOJI

The East Brooks Iron Range is in Township 28, Ran^ 25*

Michipicoten area, District of Algoma, Ontario. The range is

comprised of a zone approximately 1600 feet vide, starting 1^

miles east of Andre Lake and extending eastward for *fOOO feet.

Andre Lake is about l^r miles north of the Josephine Mine.

METHOD OP MAPPING

In 19^+9 a baseline was cut for a distance of 2600 feet

from the western extremity of the range. During the spring of

1950 the baseline was extended east an additional ^300 feet,

thereby giving a total length of 6900 feet. An attempt wasS made to establish a baseline by stringing a continuous cord

through the bush. The purpose of this method was to avoid the

necessity of cutting a baseline. This method was found to be

impractical because of the density of the bush.

Square traverses were run for a distance of 800 feet on

both sides of the baseline at 800 foot intervals. Additional

traverses were run across the iron formation at Intermediate

800 foot intervals along the baseline, thus giving a traverse

across the Iron formation every UOO feet. The general area was

mapped on a scale of 200 feet to l inch. At the eastern end of

the range, where the Iron formation contacts lake "C", detailed

mapping was carried out on a scale of 100 feet to l inch.

GENERAL GEOLOGY

The area consists chiefly of interbedded acid to basic

lavas, pyroclastics and iron formation with associated pyrite

and siderite. It was often impossible to differentiate the

tuffs from the flows due to an aphanitic texture in the case

of the tuffS| and the lack of flow lines in the lavas.

The more acid volcanics (including flows and pyroclastics)

and sericite schist are generally close to the iron formation.

The intermediate to basic lavas are found to the north and south

of this central section* Since the formations are dipping from

80 to 90 degrees to the north, it would seem that the material

deposited iiad graded from basic to acid and back to basic. The

correlation between the beds is difficult due to the deformation

* caused by metamorphism.

The rocks on either side i.f the iron formation have been

highly carbonated and sheared.

The general strike of the iron formation is in an east-west

direction. This coincides with the strike of all the rocks

throughout the entire area.

At the extreme west end of the range a large Irregular

diabase dyke striking N ^5 degrees V cuts off the Iron formation.

This dyke is about ^00 feet wide, but the continuous length is

not known.

There is a steeply dipping fault cutting the area 2600 feet

from the western end of the range, and a similar fault terminating

the range at the east end of lake "C".

The geological history of the area seems to be fairly well

de Jied. Pyroclastics and flows were deposited grading from

. 6 -

basic to acid. Banded silica (iron formation) was laid dwn

under water by chemical precipitation. The banding probal/ly

resulted from varying conditions of the water temperature and

the concentration of the silica and some other material. As

Dr. E. S. Koore has suggested, the precipitation may be due

to the action of salt water on the colloidal solution of silica.

MetamorpMsm took place resulting in re-crystallization of the

silica i and shearing of the adjacent rocks. During this meta

morphic period violent folding and deformation took place.

Dr. Moore has suggested that the siderite was chemically

deposited at the same time as the silica. There has been a

suggestion from W. H. Collins of the Geological Survey of Canada

that the siderite is a result of hydrothermal action. Due to

the re-crystallized state of the silica member of the iron

formation, it vould seem that it is pre-mctanorphic in age.

In contrast, however, the siderite is in a very fine-grained

state which suggest: that it had not been re-crystallized, but ll

had been deposited by post-aetaiaorphic, hydrothermal replace- i

raent of the alternate bands in iron formation. These alternate

bands nay have been limestone or some other easily replace- ;

able material. At some later time the area was cut by three ;

faults trending north-west. The west-most of these is now ther r

aforementioned diabase dyke. Erosion has taken place leaving j

the iron formation and diabase dyke in high relief.

*.

- 7 -

STRATIGRAPHY

DiabaseSideritePyriteOraniteBasic IntrusivesIron FormationIntermediate VolcanicsAcid VolcanicsPyroclasticsSericite SchistCarbonate RockBasic Volcanics

Intermediate and Basic Volcanics

Intermediate and Baaic Volcanics appear to the north and

south of the iron formation and tend to become more acid toward

the iron formation. The most basic rock observed in the area

mapped was norite.

An extensive area of pillow lava was observed in the north

east section of the area. It was very difficult to determine

the attitude of the pillows due to metamorphic deformation.

Acid Volcanics

The acid volcanics, consist of fine grained metamorphosed

rocks which vary in the percentage of quartz, carbonate and

chlorite contained in them. These rocks contain minor amounts

of iron in the forms of oxide, sulphides, and carbonates.

The sericite schist present immediately adjacent to the

iron formation resulted from the alteration of acid volcanics.

It varies in colour from pale green to buff, and in sore cases

to a bleached white.

Tho carbonate rocks are fine to medium grained. There are

- 8 -

some Iron oxides associated with these rocks.

Iron Formation (See Economic Geology)

Basic Intruslves

Small Intrusions of a medium grained, chloritic rock occur

800 to 1200 feet north-east and north-vest of the iron formation

in the basic volcanics.

Oranite

The only occurrence of granite in the area is at the south-

east corner of lake "C". This rock is coarse grained in texture

and coloured a fairly light grey.

Diabase

A large diabase dyke, striking north *f50 vest forms a knob

at the vest end of the East Brooks range. It is approximately

^00 feet vide, and of unknovn length. It is thought that the

diabase filled a fault which had separated the East and Central

Brooks ranges. This point, however, was not firmly established.

The dyke is medium grained and it has been partially altered to

chlorite. In some places the texture becomes aphitic.

ECONOMIC OBOLOOI

Iron Formation

The iron formation consists of banded, and in some places

massive silica. It varies in width from *tO to 2*tO feet, and

extends approximately *tOOO feet east from lake "A".

A fault has cut the iron formation 2900 feet east of lake

"A" and the east section was shifted ISO feet south.

The west section extends from 200 feet north of 3^20 on

the base line for 2300 feet to the fault. It is in this section

- 9 -

that the maximum width occurs.i '-^

East of the fault, the iron formation extends eastward for

1730 feet at the point where the iron formation intercepts the

shoreline of lake "C", it is interfingered with sericite schist*

It could not definitely be decided whether the iron formation

went into the lake or levelled out on shore*

There are three small outcrops of poorly defined iron

formation cast of the main bend. These consisted of leached}

carbonated, siliceous rock.

It would seem, therefore, that the iron formation extends

in that direction.

Pyrite

A pyrite zone 210 feet long and 30 feet exposed width was

mapped on the east end of the range. Siderite occurs within

this zone with a surface width of 20 feet.

The second pyrite zone, having a width of about UO feet,

extends 200 feet west from the eastern extremity of the west

part of the iron formation. This zone also contains an area of

siderite, chlorite and silica.

There are three other rones of pyrite in the East Brooks

Range. These occur at UOO feet east of the east contact of the

diabase dyke, 500 feet east of the dyke, and about 200 feet east

of lake "B". All these zones have some associated siderite.

- 10 -

CENTRAL BROOKS IRON RAKOE

LOCATION

The Central Brooks Iron Range is in Township 28, Range 25,

Michipicoten area, District of Algoma, Ontario. It is about one

mile north of Andre" Lake, extending 5000 feet eastward froa the

east shore of lake "F" (see the map inside the back cover)* The

location of Andr6 Lake was discussed in the preceding chapter on

the East Brooks Iron Range.

METHOD OP MAPPING

A bajeline was cut from the east end of the Range for a

distance of 3200 feet, roughly following the Iron formation.

This section was traversed at 800 foot intervals. The area was

mapped at 200 feet to l inch. The west end of the Range was

mapped in a similar manner. Examinations were carried out on

the shorelines of the two lakes at the west end of the Range.

GENERAL GEOLOGY

The iron formation trends north 70 degrees west, with an

almost vortical dip. Several diabase intrusions were observed

along the formation, but the only dykes of any appreciable sire

were at the ends of the range. The west end of the iron forma

tion is split Into two branches by a diabase dyke. This split

is approximately 1600 feet long. A small dyke cuts off the iron

formation at the eastern extremity of the Range. This is possibly

the continuation of the dyke which terminates the Brooks Range.

To the north of the banded silica the rocks are, for the

most part, carbonated material. Much of the carbonated rocks

was brecciated during metamorphism. Carbonated intermediate

- 11 -

volcanics occur to the south of the iron formation.

Due to the difference in rocks which arc near the. Iron.W r ir- formation In the East and Central Brooks Ranges, the MEBtar i*

not convinced that the two ranges were originally connected*

The rock most obviously missing from the Central Brooks Range

is sericite schist. It was not definitely proved that the

diabase dykes on the two ranges are actually Just one dyke.

STRATIGRAPHY

DiabaseSideritePyriteIron FormationIntermediate VolcanicsAcid VolcanicsPyroclasticsCarbonate RockBrecciated Carbonate Rock

Intermediate Volcanics

These rocks occur to the south and north-east of the iron

formation and In the split at the west end of the formation. The

rocks are generally massive, but some brecciation has taken place.

The interstitial spaces have filled with siderite. In places

the fragments are sericitic.

Diabase

The diabase dykes cross the area In a general north-west

direction. The particular dykes have been discussed under

"General Geology".

ECONOMIC GEOLOGY

^ The iron formation consists of massive to brecciated silica

with minor amounts of magnetite, pyrite, and siderite present.

- 12 -

The average exposed width is about 300 feet! and the total

length of the banded silica formation is about 5000 feet. Three

zones of siderite and minor pyrite were located in the silica*

The most easterly of these zones is 100 feet south of the 1600

foot mark on the eastern baseline. The central zone of mineral

ization Is on the north side of the north limit of the iron

formation f approximately 300 feet north of the 600 foot mark.

This zone extends for about VOO feet with an average width of

VO feet. The siderite is of no value an ore however, as it is

mixed with silica throughout the zone. The western zone crosses

the baseline at the 100 foot mark and it extends north along

the cliff face of the banded silica. Tht siderite in this zone

is ulao very siliceous v and of doubtful economic value.

Sotfll occurrences of siliceous siderite and pyrite occur

alone the north side arid throughout the iron formation.

CONCLUSIONS

Judging from the surface showings it is difficult to

determine the economic possibilities of the East and Central

Brooks Ranges. A diamond drilling program is to be carried

out during the winter of 1950-51. Not until the drilling

results are revealed, will it be possible to state the value

of these two properties.

lBIBLIOGRAPHY

V. H. Collins, T. T. Quirke, and Ellis Thompson — Geological

Survey of Canada, Memoir 1^71 "Michipicoten Iron

Ranges 11 .

Or* E. S. Moore and H* 8. Armstrong — Ontario Department

of Mines, Volume LVII,

42C02NE8839 CORBIERE0eaS CORBIERE 120

sAsq gacxys. 1,950. by. Q. a* *BBBSR

Pyo.1qo,t{ — To map the East Brooks and 2ast Brooks Extension.

Location — Tup. 28, Range 25, Michipicoten Area.

The area ooaprised a cone approximately 1600 feet wide, starting li miles east of Andre lake and extending 4000 feet eastward,

Period — June 7 to June 19, 1950.

Personnel — Jobber, Young, ivans, Graham.

Method — An east-west baseline had been out previously in 1949 for a distance of 2600 feet. This baseline was extended to 6900 feet and traverses were run north and south of the baseline at 600 foot intervals with additional traverses in the vicinity of tho iron formation. The scale used was l inch equals 200 feet excopt in the vicinity of the eastern segment of the iron f o nrm t ion which was cupped at l inch equals 100 foot.

— General

The area consists of inter-bed dod acid to basic lavas, pyro clastics, and iron formation with Associated pyrite and siderite, striking generally in an east-west direction and dipping steeply to the north.

The acid volcanics, including flows, pyroclastics, sericite schist, are, in general, close to the iron formation which forrao central part of the region rappod, while tho intermediate to basic lavas occur generally to the north and south.

Carbonatization resulting in carbonate rook has coourred in the acid volcanics and also to a considerable extent in the inter mediate volcanics*

A diabase dike trending approximately N45W cuts off the iron formation on the western extremity of the baseline.

Several small basic dikes are associated with tho basic volcanics in t! j northern part of tho aroa.

Infonqediate ajgft ^||ta o Volcanics

These rooks occur north and south of the aoid volcanics and appear to b* gradational into them. The rooks appear stost basic in the northern section of the area. An extensive section of basic pillow lavas occurs in the north-east part of the area.

Acid, Volcanics

Acid volcanics occur in an east-west sone approximately 500 feet wide extending from the diabase dike across the entire area flapped.

The rooks included in th's division are, in general, fine grained metamorphic rooks consisting of varying anounta of quarts, carbonate and chlorite. Minor iron is present in the fora of oxides, sulphides and carbonate.

Sericite aohist and carbonate rock are, for the most part the alteration of aoid volcanics, although the intermediate volcanics have also been oarbonatlBod.

The sericite schist is the pale green, to bleached white, waxy type conraon in the iron ranges (e, K. luoy, Josephine, Mildred). 9oaa of it in ao well bedded in appearance that it rvnoicblaa banded iron formation in structure (north of 6 ^ 00). Quarts eyeo are p re rent in sone of the sericite echist (south of D* H.

Oarbonato rook in thin range is generally a fino to cad turn rrainod rook carrying varying amounts of associated iron.

Iron, Eqrpatfrpn — See Economic Geology.

Intrsive* ~-

small dikes of eediua grained chloritic rook ocour 800 to 1200 feet north of the iron formation in basic volcanics on the east and wo at enda of the area napped. They *oaw*iii\t reeeoble the basic volcanics and are difficult to differentiate Irow thorn* Two of these dikes ware detected in the area chocked for a KAgnotio anomaly north and east of 69 X CO.

Oranite —

Coarse grained, gray granite occurs on the south-east shore of. the lake on the east end of the range.

— See Economic Geology.

Siderite — See ufcononde Geology.

p*** J

A diabase dike outcrop* in largo knob* on th* woat end of the Bast Brook* in a ion* 400 feet vida trending north-we*t, Thi* dike appear* to have filled a fault which ha* separated the 2a*t and Central Brook* iron formation*, with the e**t Brook* being shifted *outh relative to the Central Brook*.

The diaba** i* a medium {rained rook largely altered to chlorite with ophitic texture only in soiae part*.

The iron formation eons, consisting chiefly of banded and massive ailioA, ha* an overall longth of approximately AOOO feet and i* divided Into two nnin actions. The division point i* at the 26/00 point , where the eastern end of the formation ha* been shifted south approximately 160 feet.

The western section of the iron formation extends from 200 f pet north of 3 X 20 to 26 t 20 on the baseline (about 2300 feet). It varies in width from 40 feet to 240 feet.

The eastern section of the iron formation extend* from 120 feet south of 26 ^ 00 on tho main baseline to 140 feet south of A3 f* 50 (about 1700 foot) and lias a maximal estimated width of 80 foet. On the eastern tip there is a complex interfingering of Iron formation and oarbonutiMKl seroite schist so 1 1. ut it i* difficult to determine whether the iron fornation zone goes into the lake or Ion ea s out on tho shore.

There are three very minor occurrences of poorly defined iron formation east of the main aonea. They consist of leached, siliceous, carbonatlEod rock approxijnately HO feet south of 53/00, 54 X 00, and 57/00. These occurrences, although they 'TO orly about ono foot iii itidth, ei)g?*est that tho aone nay extend in that direction, partiouljirly since there is iron formation float south of th+toe occurrences on the lake ahore slope.

l*yrite and siderite aonee with the iron formation have been described by ii. L. Goodwin. The five eons* of pyrite (son* with siderite ) which he describe* exist in the relative positions in which he ha* napped then.

The pyrite tone on the east end of the range has an observed length of 210 feet and width of approximately 30 feet. Siderite- pyrite cones occur within tt. i* none with an observed width of about 20 feet.

A pyrite cone with a width of ab^ut 40 feet extend* from 24 X 00 to 26 ^ 00 on t; e eastern extremity of the western half of the iron rance, within this aone are areas of mixed siderite and pyrite, chloritic areas, and siliceous areas.

Pyrite aonea with acea siderite ara aaeooiatod with the iron formation nortb of 6 ̂ 100 (width- -about 30 faat exposed), near 9 i* 00 on the baseline (unoertain width), and in a tranob aontb of 27 j* 50 (widtb-aboot 30 faat)* Tbeae aonea ara not aa well expoaod aa the first three •antioned and their extent ia lava known*

In general, siderite and pyrite aonea are auuth of iron formation on the evidence of surface showings.

l* The Seat Brooks iron formation is approximately 4000 feat Ion* and has a mnxlimvn width of 240 feet.

2. At least five aonea of pyrite with associated siderite exist approximately where 3. L. Goodwin napped then.

3. Four of those eonea have a width of at least 20 feet.

1. X-ray drill holes should be spotted on the pyrite sone outcropping on the east end of the range in order i

i. to obtain a sample across the sono.

ii. to sea whether or not the aone continues into the lake.

2. Long drill holes will be necessary at some future date to discover the extent of the oro sone at depth.

THJJ KND

EAST BROOKS DBHLIHO PBOGRAM

By, H. J. Taylor

Introduction i

The East Brook* Rang* is located in township 28 rang* 25, approximately 2^ air mile* north of Hawk Junction on th* Algoaa Central Railway. It i* accessible only by a 4 oil* tractor r**d froa Hawk Etanetioa and by a canoe route approximately 3| ailes north and east froa Josephin**

The terrain i* quite rugged and the area i* heavily wooded by spruce, jackpine and birch with very heavy brush and deadfall*, R*li*f varies from 100 to 150 feet, the elevation increasing (land riving) froa east to west. The area i* drained to the south by a chain of mall lake*, many of then being no more than beaver ponds.

Drilling was undertaken primarily to determine th* extent and ouallty of surface showings of carbonate and sulphides which were mapped curing the -roamer of 1950.

Drilling (Sumnary);

Drilling wa* tinder oontarct to Boyles Ltd., using ZX core equipment and a BBS-1 machine. A total of 13 holes were drilled along th* formation on N-S sections approximately 600 feet apart along an E-W base line. Holes 6 to IS inclusive were drilled on Jalore claim* # SOI 17941. 17942, 17943, 17944, 17947, and 17948. '; total of 7,218 feet wer* drilled during the months of June, July, August and the first week in September, for an average of approximately 2,400 feet per month.

General Oology t

The geology of the area has been adequately reported on by J. P. MoKee in his report on the Brooks Ranges. The geological map accompanying this report i* th* result of combining surface mapping *nd drill records, the formation** encountered in drilling being projected up-dip the intersect th* surface.

The formation* in the area strike 2-W, generally a few degree* south of east and dip between 650 to 8v to the north, the dip increasing froa east to west.

The rook*c9BQ*i*i chiefly of the iron formation forming a forming a fairly prominent rid/^e along the range bordered on the south by a series of basic to intermediate volcanics and on the north by a •erie* of basic to acid volcanics.

The following tableeof formations is applicable to the East Brooks Range.

PRECAMBRIAN

KeweenawanDiabase dikes.

Intermediate to basic dikes and sill*. Siderite and pyrite, carbonate rook.

KeewatinAcid to intermediate volcanic flow*

by H.J, Taylor

Strikot and dipt of the iron formation and the encloting rockt outcropp

ing in tho vicinity of the bate line on toction 2800 were •hooked by tho0 writer. Dipt in general were in the order of 65 to the north, but a few

isolated exajaplet of tooth dipping formationt were found, Tbooe were at

foUowtt

(a) Approximately 65'* on teotion 2800, in th* sericite schist form

ation - 6503.

(b) Approximately 50* west of toction 2800, near tho bate lime, in

the mineralised aone - 70*5*

At stated, thote are isolated oases, and, since the turface condition*

are obscured by overburden, thote may be due to large sections tloughing off

the formation*.

Two general strike directions were noted at foUowtt

(1) South of 65*3 on section 2800, Strikot are about M2**.

(2) North of 65'3 on section 2800, Strike* are about mS^.

The change in direction of strike correspond* with the potition of

No.l fault at indicated on the accompanying sketch. There it also a vortical

drop at thit point of about 7 feet*

Where fault No.2 it assumed to bo there is a drop of abovt t feet lato

a swamp. Also, in drilling KB~12, 20' *f easing wa* required,

A hole oould bo drilled from the north tide "bf the iron formation tt

the potition indicated to further explore this situation,

i

H.J* Taylor "~~~

Keewatia (cont'd)Iron FormationPyroclastic* (with interbedded Howl)Intermediate to basic volcanics.

All rock typo in the area, with the exception of the iron formation and fresh intrueives, were foung to hare undergone carbonatization in varying degrees from moderate to heavy.

Sericitization is cannon, especially in the pyroclastic* sad vide sections of sericite schist and serlcite-carbonate schist were encountered in the drill holes.

Faulting;Faulting in the area appears to be extremely complete The only

major fault which c en be traced with any certainty, is the MCvtriking fault in the vicinity of section 2300. This fault can be traced on the aerial photograph of the area.

Evidence gf numerous minor faults was encountered in drill holes in the form of small gouge seam* and highly fractured section*. Moat of the minor faults appear to strike in an eaat-westtdirection. Any attoapt to corel&te these faults would necessarily be a project in itself and at present there is not enough tine for this.

Grade and Tonnage;The area drilled was divided into two sections, A and B, to

facilitate calculation* of grade and tonnage, A include* section* 1000, 1600, 2200 and 2800 for a total length of 2075 Teet, and B include* eeotiena 4000 and 4500 for a length of 825 feet. Two factor* were used in the division,

(1) The KB trending, fault in the vicinity of *eeti*n 3000 antf(2) The fact that no ore sone was encountered in drilling

section 3350. Average grades by sections are as follows i

Section Hole* Fe SiOo S.SiOo 13.431000 16417 36.53 13.43 20767

1600 15*18 19.57 35.30 1.212200" 13U4 30.83 25.04 14.512800 l UT 2 23.59 28.89 5.173350 Ho ore section4000 8 44.91 6.80 8.354500 7 35.19 16.60 13.50

. Average grade for sections A It B are a* follow*t

Section Fe SiA 26,2tfB 39.87* U.ee* 11.05*

A tt B Combined 28.82* 24.65* 8.78*

Tonnage^Section A 1,351,142 Ton*

B 312.500 " Total 1,663,642 "

Conclusion and Reconaendationa t

results of the East Brook* drilling program were, on the whole, disappointing. Mo indication of an orebody waa found in drilling to a vertical depth of 500 feet and the ore encountered was of inferier grade*

The eastern section B proved to be of higher grade thwi the western section, ,but extensive prospecting east of the range daring Kay and June of 1951 failed to disclose any extension of the East Brook* range.

No further work on the East Brooks range is reoooMnded by tht writer due to:

! 1) The inferior grade and low tonnage. 2) The fact that the ore tone in general decrease* in width with depth*

the centre of claim 17058. The area arourd this outcrop is covered with overburden. Some trenches have been dug here, apparently across tne mineralized zone, but are now filled in. This trenching was done by Goodwin about 1910. J**- commercial quantity of siderite or pyrite has been found on the property to date.

Iron, Formation; This rock is well to poorly 'interbanded white and grey silica and siliceous buff coloured siderite. rorthe taodt part it ie extremely fine grained, but in places has a granular character. The siderite weathers Lo a reddish brown color on the surface. A o.inor amount of pyrite is associated with the silica and siliceous siderite. The siderite bands mentioned in the section above are not the typical siliceous siderite bands of the iron formation, but have a lower silica content and more often have associated sulfides.

Four segments of iron formation were found. Three of these appear to be at the name stratigraphic horizon, strike more or less east and west, and run from a point east of the claim through claims 17956, 17957, 17958 and 17959. The continuity of this iron i'omation ie broken by a 1000 foot gap in claim 17956, and by a gap of 1800 feet in claiui 17958, associated with a lake. The easteraiost segment has a length of about 400 feet on t';t claim (ricup, the central segment is 1800 feet long, and the westerniost segment about 1000 feet long. T ie width of t'nP iron formation varies from 4 feet to 150 feet* The wester.Tiost segment narrows AB it progresses westward. /. fourth segment of iron formation, striking almost north arid south, was found on claim 179'-4. It is about 10',)0 feet long and 40 feet wide;. The structural relation between this and the east-went striking iron formation is not apparent but may be tied up with the intrusive on claims 17954-5,

Acid to Intermediate, Volcanics; These are fine grained grey to ferey-green highly carbonatized and sericlTtlzed rocks containing yotiu chlorite. In places they are quite massive, but elsewhere are sheared or show some suggestion of lamination. beyond the fact that they were originally volcanics, little can be said concerning their origin, Tiiese acid to intermedia tt- volcanics neku up the uulk of t .e country rock ir, thw central pert of the map area, and in the vicinity of the iron formations. The carbonatization and rericitizat on has been aore intense ir; the vicinity of the iron formations.

Intermediate ^o Basic Volcanics; This rock type is gradational to the acid to intermediate volcanics'described above. It is a fine grained, grey-green to green chloritic rock containing varying araountc of carbonate and sericite. Kor the main part it is uassive, but in placas it has been sheared. the country rock of the youthfern and eastern part of the map area is intermediate to basic volcanics,

Structure; In general, the strike of the banding and schistosity, as well as that of the stratigraphic horizons, is N75-80 W. The dips are very stteep, showing a tendency to dip to the north. In the north-west part of the nap area the strike of the rocks changes to north-south, probably due to the intrusive in that area. The segment of iron formation missing, in claim-17956 may have benn faulted north, as shown by Collins. The eastermost of tho faults responsible for this shift has since been filled by a diabase dike, The iron formation a -pears to pinch out toward the west.

VSfcb'pretorio* of iron formation, .the heavily carbonated ; of the .surrounding rock*, and t,h*''presence bf minor oideriteindicatr .that th^5 is a favourable area for an iron ore

ut the^seological napping and the limited drilling done onhave failed to find any mineral concentration that

have boatoercial value. ' '

Respectfully submitted,

John J. DruryAsaistant Residont GeologistJoloro ilinit\g Conpany, Limited

"V" '- 'i.'-*' *

* ~y '*''

;.*'-- "i .'-'i'V..-'^'' '., -*S 1-; -.:"'.'"* '"';-.' ;v'"''.'v. s - '

;\

?

KAMB

TO Mr, C. F. AlliaonDirector of Chemical Laboratoriea City Offioa

3.8.

l* ITT l kU* ON, *A.

INTRRDEPAUTMBNTOOKWKHI'ONnKNCK"A™ May 8, 1950

COMPOSITES.

Tbaaa powdara vara oratarad in pura carbon (hi^i purity) and aubjaotad to D.C, arc, 7jA, 300V, for 30 aaoonda. Upon axaidnation and •Ytluatlon of tha antira apactnw from 2AOOA to AOOOA, lina for lina constating of 352 linaa excluding the iron linaa, tha followingia to be reported.

ElewntPaSiC*MgMnCuPbKHaTiAlHiMoSnZnAaAgB

DK-1,,i.u Major

ff'.ti' MuchSowMuchMuchMuchSowSowMuchSomeMuch

*ot SOWLittleLittleLittleSowTraceLittle

DK~2MajorMuchSai*MuchMuchMuchSowSowMuchSowMuch

.tit SomeLittleLittleLittleSowTraceSow

DH-AMajorMuchSe**MuchMuchMuchSomeSOMMuchSowMuoh

,o*o SomeLittleLittleLittleSOMTraceLittle

JEW/d*

'i. ,J* X/

91 '

wct

41

-tt

j* r 7

*T

'/X

f H/

tf'S/

't?

•1.f f

•A-Y

•A-f/

-f?

ft "

VJaloro Prospecte

JONES AND LAUGHLIN ORE COMPANYNCGAUNEE. MICH. nATr Jan.13,1949

LABORATORY REPORT

9, NO.

BrX"

nnit

tt

M

Ev

rt

Wi

ttne

..m

DMCWIPTIOhJ.ogg

coke RungeSidcrite-j1! 21.06 2

" /2 18.06 2" ^3 30.50 2

Llagnetite .21 JRook ad Joining

lujfdJ

9.086.328.341.70

Sideritell 15.71 ]|8.93" " " #2 14.83 19.70

i-Alloe LakeSulfide^,?! 10.63 4

1 " #8 14.59 4" " #3 14.97 i

Q.172.941.55

Magnetite -ir -f 1.08 ql.74Lkes-ArnottiSidQrite . — -. l 7 * 48 'Sideritized Tuffll.98ilioeoub l.'.6gnetiteg,50Ired Ron^e

Siderite 16.39 3

i

v

,' ( M l \ i , -A ; -\ i : ; ;l .

I'L

-

6.017.77

L8*i8

'8.01

r r ^ rll-v.1 .-

u' 1

...- -j

Ti02

.03 2

.01 2

.05 2

.01 2

.37 J

.29 2-^

.11 1

.05 1

.37 2

.03 3

.27

.67 ^

.96 4

.08 C

- -, ,,•' i ,

ill !-

' '

• ItlCA

3 f 529.283.886.16

9.483.44

1.323.127.885.56

7.887.986.82

0.08

^4nJ1 dli j

L~— l!

r r f

r HOt.

.081

.017

.017

.036

.039

.033

.018

.010

.030

.005

.014

.031

•.

.250

.787

.184

.110

76141.72

10.829.70

13.84.111

2.39.353

.035 1.775

.006

"TT6

THE

GEOL——— 9

-tt

l. 91

r TOOFF!

JC1SI*

\OtT-

.BJ?A

MN

1.211.211.17.78

.95

.95

.08

.08

.04

.17

fc"IF.86.26

1.59

BE R

:E OFONT^

w*, i K**

Mr*^—

A120?

.53

.10

.80

.08

9.356.87

1.76.66

6.33.46

5.686.04114. 5C

.79

:MOVTHE

DEP1

f .A A n i

CaO klgO

i, 16 0.73:*93 p.62i. 478.83

5.934.01

.541.319.042.47

1.5610.73

10. f

.06 2

ID IT

KE-..IL

OF"* J"V *

3.905.02

3.533.23

3.403.61

.764.60

3.74

4.5f54.44

.67 -

OM

Z;;TiUJliEJT-. -—

' f *O-MM-*-4*

JONES AND LAUGHLIN ORE COMPANYNEGAUNEC. MICH.

DATE S '..1. 1949

LABORATORY REPORT

t. NO.

S 06799

~"

DOCNICTION 1

Siderite ?roofts H |" "ea 1, intension; 2 t

'/ilkc.8 *rnOv : Carb." " Impure Sid.

l" " ~' 1,l - -

ij.

ii!

ji

'OtiRPVri

u.242.445.82fl.42

--^i

-

4

4

tlLICA

9.289.521.505.20

f HOt. 1

11

1

Rn* *c Kcfee3.226,934.064.85

. , .

~|

r .-....r— ii

RMN

1.46.85.15.19

r~~-

CttO.96.15

10.929.5E

kigO.67.231.0l|.77

w.R.Faalob

t i *O-MM-*-4*

JONES AND LAUGHLIN ORE COMPANYNEGAUNEE. MICM. oArrSePt 37 f 1949

LABORATORY REPORT

1 NO.

99000001002

DElCAtmON

1?. Brooks #1-•Brooks n A?B,Cfi. Brook a *3Dine Ltke #4 A, B

T-28R25

1

i

j j1

i4 —————————————————————ii ' ' "" " '

rt |

31. oJ28.0*23. 9t10.74

• ILICA fMO9. 9.

W. H. i

MN

aijipt

CMIUII1

-aD.MM-9-4*

JONES AND LAUGHLIN ORE COMPANYNCOAUNEE. M ICH - Jan. 5 . 1980

LABORATORY REPORTBrooke Range

*. - m^-t- ̂ "t __

NO.

.058

.059

.060

1061

1062

1063

LOG4

DCtcitirnoNW*B-2*/ 75i'-80'W-B-2*** 80 '-86'W-B-2**^ 114V -116' ]

Siderite W Brooks "V 2HoKee Special #1

Siderite W Brooks *X E}.;oKee Speoial #2

Siderite Tuff W BrooksMoKee Speoial 13

Hematite (Larry PetersAlgoma i.! i 11 e

JW:J-** 'WfT ,^/",

^~?-i ^ r^, *? ('j.*'

. T t/ .*?^ j 'j. rx., x!^L^st&t^ ^ \^-^^jll*S.

rt

7.408.174.80

4.67

7.454 ——5.17

62.0C

•* j^*-' ^xf

*V "^^-^

Pe8.178.5616.50

36.24

28.68

5.24

62. C

*v.' 6-^,g* *r/

• ILICA

38.3842.9247.1

16.2

23.6

48.38

0 9.6

/^T^

'xv*vf̂'•1f

P MOt.

4

2 '^(, .

i

3

^-,

^r' x',/v

(V. k.

•.

^ i

-^ i

i'eelo

MN

.28

.28

.70

/

i ,-

,-* r*.

t 4*1 -ff

b

L OB 8

16.1013.9013.14

r*- A,s

f 1

fer

t 1 0O-MM-9-4*

JONES AND LAUGHLIN ORE COMPANYNEGAUNE*. MICH. nATg Jan?.1950

LABORATORY REPORTBrooks Range

t. NO.

-1051i

-106(

-1061

DCtCMirriON

W- B- 8 75i-80' 7w-B-8 eo'-ee 1 eW-B-2 IMi'-llS'l

L Siderite MoKee ?1 2fi " "#82g n frff n Jg

4 Hematite (Larry PeteiAlgoma Wills e

i

1i

l;

• ——

rt

• 40.174.80

4.677.455.17*)8.00

^tg1

9.178.5616.50

36.8488.685.84

68. OC

i

• ILICA

38.3848.9847.1

16.883.648.2

9.6C

PHO*.

i

J

48

s. MN

.88

.88

.70

i .088

6.803.70

13*14

W.R.PasiohCMIMI.T

V a*O-MM-9-4*

JONES AND LAUGHLIN ORE COMPANYNCGAUNCC. MICH. ,._ , Jail.30, 1960

DATE.

LABORATORY REPORTWest Brooke Range

• . NO.

•1067d9

.-.~...

oocNirriONff-B-4 #10 56. 6 "-61 '6":

" #9 63 f -67*6# )#8 76 '9"-80' 1

i

,

1

.—. y , . ..., .

1

1 1

rm

1.393.098.01

't

. — .. —

• ILICA

7.66e.fcu6.06

PMO*.

Z1

IJ

Tfjal M N4.328.323.84

W. R Pe*l. ih

26O-MM-0-4B

JONES AND LAUGHLIN ORE COMPANY. M ICH - Meroh 6.19SO

LABORATORY REPORTW. Brooks

B. NO.

11801131

Dt*CNIPTION

W. Brooks D. H. #3 6110 '" D.H.#7 Siderite/

Tuff 0 50'

l - - - . - -ri

iIT ' "" ""

jT"""" " ""~" ii

50^

20.4721.39

• ILICA

39.8038.34

r- -

PHOS

i i

1— ——

^H1a. i?J8.09

MN

----- '--

16O.MM.0-4>

JONES AND LAUGHL1N ORE COMPANYNEGAUNEE. MICH.

LABORATORY REPORTEast Brooks

NO.

LI 21113fi

DC*CKIPTION

12) Hole EB-1 4'-9' l13) -14 1 i

III 14) -19 J4115) 24 Z5(16) 29 24J(17) 34 qa67a

(18) 39 j(19) 44 S(20) 49(21) 54 i

9(22) 59

sojuro7.516*759.676.277.043.668.280.9758.13(6.35iO.72

-11401(23) 64 J 6. 27

..——J

• ILIC*

24.4415.12

__ i. 1 J

T l4 ' f~""-^

|

L...... .j.-. . . .i ~ ' "" ~ .i""~ " ------ - - - i ,. .... .............

. t

-. ..j . /w y-

r"- 1** -i

i

*

' . ' .', r .

l

i

7.249.507.825.843.343.8412. 2^22.3(36.6114. 3^

'

—- —— vm^Bji'MO* | 7t

1 1'

29.1635.9739.8139.9641.8943.5^45. 5C46. 4S40.4!38.8*51.0!42.7!

i......I ....J... I-' t

1.

r— "-~-\

,

\ 'r'T "i""\./^

f

'•j ,i * i '' .R.Pa

MN

,|

i

L't*

3loh

V -

J

w 1 * -. '

- 7

itA. 7 '

f

7 J

t

————

CMIMI.T

V I.O-MM-9-46

JONES AND LAUGHLIN ORE COMPANYNEGAUNEE. MICH. -. -- April 12, 19^0DATE.

LABORATORY REPORT

•1141 E . Brooks PH #2 4'-9' 25.0914* 16.16

JQ2-23.0 ?- 27.7 E Brooks

_ 2. _ .-.

.^5 ..li JcaoksJ2i(4Je.f2I.-^! 1̂24.91 33 . -—-'————-1-

*fi6. 24^4-29.: :.—71-7.6 ...^iiii . . — t.-—..

."...43*32423*6)-34^4 --j- l --

24.2t.14.20- 4— ! ^~

!L. J 3*78., ..5i. J'— I!..JMI Jn. jLr

..40.70—J—

J7.5. 2

W. R. Pasich

ltO-MM-t-4*

JONES AND LAUGHLIN ORE COMPANYNECAUNEE. MICH. -.—ItR l, 1950

DATE

LABORATORY REPORTBeat Brooke

1. NO.

.170'.171

L172

DCtcnirrioN

Oomp.E.Bt^l 4 '-64'Corap. E.B?#3 4'-29' ft

43 1 10 H-48'H

Comp. E. B. H 85 '-103'

i

iT ' ' ~ ' ' 1" ' ' " "' " " " " '

i

i

i1li~~ - - --

i

rt

?"

- -^

t ' -

.-,

SILICA PHO*.

-

^

,

1

r

I- ————""""

- .. ,-.-

l-

UM 1

IT.R.P

rio|e3.006.018fiJ'Jli J^•^•^l^^n ^^*^^^^^^"fl

.000

iBloh

1

CHIHKT

.'•ifiar.,-.- .

fpl;* ; v-•i'*-/'1 ' - -..

V ltO-MM-0-4*

JONES AND LAUGHLIN ORE COMPANYNEGAUNEE. MICH. --— July 5. J9SQ

LABORATORY REPORTCAWAI

1. NO.

23

2A25

27

,g

DMCHIPTION

Central Brooks Sample 1^Ho±a GB— 1 25' 6" — 30*

Sampld j?2 - 35*Sample ijf3 - 40'

Hole CB-^ 411ft" - ^SlRamjV,Samplfi #5 - 50*Sample #6 - 55*

Holft CB-^ fl2l-fl7l SAMn.iWi

l—

Jit ' " - ---- - -- i

i

ii

re

.20*56

-24*1E18.94

nl9*71

14*1Z

Total

23*41

26 Ifl22.6406,63

.22*72i5*24

T

• ILICA

-33*0;

27.61?7.CX35.6;32. 5J

—26*A(—40*6^

fHOt -. MN

\

--

- . ..JL .m.

R* Paalch

y i*c*-nM.flUtt t

JONES AND LAUGHLIN ORE COMPANYNEGAUNEE. MICH.

LABORATORY REPORTJALORE

.

NO. DESCRIPTION • ILICA MN c*o MgO

JLQSa

I

-L-_L.-4—4-

i _ ,.—- , . ..__.____.

.4——U-4-

..._i_____..-...

.--.4~-.-j~ —4—1-

W.R.PISTCH

JONES AND LAUGHLIN ORE COMPANYNEGAuNEE. MICH.

DATE. July 20. 1950LABORATORY REPORT

JALCRE1 NO.

3718?94041* O

'.3

'Ji

.5*^^

oeicniPTiON

C. B. -9 29 '-30'-35'-40'-45'-50'-55'-6C'-65'-70'-75'

.Z 1 -80'iS —— -9

iQ —

-85'-90*-91'

1 ' ' " \

ii

j

" " " -" " "

1" 1 " ~" "

ft

26.0620.9725.8326.9926.0619.6724.6?24.1419.28J23^ 19.8223.7523.9014,27

Total Fe28.?

22.6?28.J130.8429*6i-25*2224.21

.26.5232*ZL.2^.60.26,9126.2226.4518.81

• ILICA

^ 20.7^36.4123.3*14.3J20.8(32.3J23.4^

-ZkTJ39.^29.CX26.3128.2130.7

-J^L*5J

~. . -T \

PHOS. •.

- — - —

MN

——— - --

11 1 *

....T ~ ""

i :)..4 i ——JL i ~ JL~)

. . . .(—J - -V -|- -- — —

William R. PasichCHIUI1T

l 2VO-XM.9-4*

JONES AND LAUGHLIN ORE COMPANY NEGAUNEE. MICH.

DATE.July 27, 1951

LABORATORY REPORTJALCRE

B. NO.

-423

4i67

... 9

-JOG—

-32—

DOCMimON

E Brooks Sample #1, Hole #7533. 6 '-535'#2 -540'

. #3 545'M -550'#5 -555'V6 -557'.#7

5? V* 5 -5?5'

#9 "585*_____ .. _ _ ^10 -507'

i

---- -

l . .. .

42.6JU.17

Ji7*5fi

5-JA.fi

-20*16 17*5519.63

6-™

.13*00- ——

• ILICA

-.2.60 ...1.56

9.06—5*16

.26.00

J*9*72

53.7870.10

i . !: 'p" " " ' """ "t

ii

-—

-

- -— --

1 ~ " - ---- - - - - --- iT" . --- -

---— — - .

H--i i . . -. -

,HO..

iT

....j- -i

1

1

•.

.12.45 12.59lUQlj

21*34" 21*521

...4 -6.70

2.67 -1.08

1.84~ ' " ""1

,..-.. ]... ..-.j. .- j -. -.

•- —— -•- - - -t

.I i 1 :. - -i ... i --.-L, .i

1

— - —— -

MN

- j —————— l

. .-..,. ———————

———————

----- —r- .-. ——

~

- ——

k A^ ~|- -. - -i

t-'-r—j-- ; rj-1

1

——————— ———————

———————

W. R. Pasich

JONLS AND LAUGHLIN ORE COMPANY NECAUNEE. MICH.

DATE. August 28, 1931LABORATORY REPORT

JALOF•. NO.

07070809lo1212

13ll- lS1617li?15 — 20

DESCRIPTION

E.BrooksHole#ll222.5*- 225'

- 230'- 235 '-240'- 2H4'

E.BrooksHole#12237 - 240'

- 245'-250'- 255 '- 260'

1 - 265'

"opal

17.626.430.228.444.5'

18.0'

IE

3l3^r

r

18. 1420.118.722.619.2

-270' 1 17.9- 273-5'

296. V- 300'21 -304.5'22 E.BrooksHole#13

............ -3751.^380'23 j -385'24 400' - 405'25 - 410'26 420' - 425'47 : 410' - 415'28 1 - 420'' " j

[J9-22^,5

4

PL?L9~

22.^5

26.818,426.4^.833.633,436,9

B

1}5}r

• ILICA

J9.56J6.6223.1828.46L2.30

10,0036.5034,2035.3630.12?5.lo^5.84JfiiSO f^5,l6H^o

P8. 3637.8029.6019,262.3,1623,1614.78

PHO*. *.

3.7:

13.51

12. 5J11. i;16.^

.57*1

.50

.65*

.55*•763

MN

i

1

)

)

\

)

)

.6lJU -78^ J

.44(L0 f 867.27

14.0*2.1J

6.2(23.07. L

23.4*23.3.

)

)

i

J

)

B

W. R. Paslch

V ltfr-MM-9-4*

JONES AND LAUGHUN ORE COMPANY NEGAUNCE. MICH.

DATE. August 33. 1951LABORATORY REPORT

JALORE

.AB. NO.

-5*9

5305^53253?534535536,.,

•33?K.-3Qa^u —532-.p4i.54 j5,42541

DCCCNIPTION

K. Brooks, Hole #14552.8' - 555'

- 560'- 562.5

580' - 585'- 590'- 595'- 6co'

E. BrookSj Hole #}5120.3'-125 I

-130'-135'-140'

1 .145'-150'-.155 'r . ————— .. —————————— —————— e^^ ————— ..

170 '-175'

'i ii

i "' . - -. * it . . . - i

A O td -ft

J 3. 2;2o.5i19.9*16. 6(27-7129.9^3^- u '

14.7!17-616. l i20.^19-620.122.231.*

1

) jiJ ;i* *

^

iJ)?J\pH

t"j

1

• ILICA

7.^0

5.162.663.84i7.54JO 009.46

16.90{3j 80*4-32b. 30J5-56(54.7453-3217.90

i

-

PMO*

1

C

1Cli

ti

iJ

t.

.488

.410

.242• 31

(.98).6lLoi '-.vi.-;-'.12.71.5:4

..05I.u4

^2.419.16•--—t- - -

MN

.

*- ——— ^

W. R. Pasich

JONES AND LAIJGHLIN ORB COMPANY NEGAUNEE. MICH.

LABORATORY REPORTJALOKK

Sefr* 6

1 NO.

44^546—474849——

O..C Mi ,T,OK

E.Brooks HoWl6 741'-745'-750'-755'-760'^76,5'-27Q 1-772'

lotal

36.51J3.tl4. 36.1234.8943.65J7..2Q.

i

. -p - " ~ T

- ———

i 1 ijr

i ;

i] j.... .i.— -- . . . .. . ...... -.- - - - ' ™'" t " ' . L . . . .. ., . . , , r

l

I

1

j

' "t"'

SILICA

11.6015,74jL3*3u- 15.184*80

16*50. 25.04

mot 8.

15,6815.8510.1019.6324.2824iP911.77

j

1 l

1

j1

MN

•—r-i

, J. ^—I--f———

i

U— -

1 "

- ————— ——— -. —— , ————— -.

1j

W. Rt PaaiehCMCMMT

*v.''"i

JONES AND LAUOHLIN OAK COMPANYNIOAUNH, MtCH.

DATE.. Sept 1951LABORATORY REPORT

k* NO.

551-552553

-555

55855S^.

.561... 562, 563-. 564, 565- 566.

JALC* " fffifiTI

DICCHirTIOM r* l

B. Brooke Hole ^780^21^7^52.0^5 ' -525 '

77 -530'78 -533.6'

E. Brooke Hole #8

11 80 -7^5'

S!TO21.8310.58*3.19

" to -740' -*4.57" 82 -745'

, " 83 -750' Ji " 84 -751,2*.E. Brooks HQlo.jfld... .

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Magpie Hine. Ont. June l?th,1912.

HH Prospecting Report Weekly.

R.V/.Seelye.Manager Mines Dept. Sault Ste.Karie.Ont. Deait Sir,

I beg to report work done by the Prospecting party for the week ending June 14th as follows:

The party has moved over to Brooks Iron Range Noi2 and has gathered the following information fron their work on this work so far. The Range has been traced running East and West for about 35 chains and is about 400 feet wide. Near the East end it is intersected successively by 2 diabase dykes. There are few outcrops on this range most of it being ocvered with drift, so that considerable work will be necessary to delirainate it entirely. The work so far hcs been done principally within a short distance of the most Westerly of the dykes.against which there see.ns to be a certain amdunt of concentration. A trench here running North and South show th-- presence of a body of siderait:e about. 35 feet wide, weathered on the surface with the characteristic brown coating. This body is within a hundred feet of the North edge of the Rang". Along the North edge of the Range is a strip of siderite about 40 feetvdde, which on surface is weathered to a yellow rusty material. This band of siderite is rather dirty containing a large amount of rock. Along the Southern edge of the Range is a strip of siderite weathering in the same nanner.

This strip shows a width of some 200 feet but the quality is poor. Another trench ran North and South about 300 feet further West

of this last trench showed up this siderite again, but it was all of poor quality. During the week a hurried examination was made of the ground between candy mountain and Brooks Iron Range No.l. The country rock cor'flists of Keewatin schists and greenstones, intruded in places by a Laurent.ian granite and diabase masses.

.7e have received no samples frro this week's work as j* t, but wht-n we do we will forward you hand samples.

HH ^ ̂ A Kagpie Hine. Ont. July 3rd,1912,

General Prospecting Report, ^,'^A

R.^.Seelye. i^anager. Mines Dept. Sault Ste.Marie. Ontario.

Dear Sir,:I beg to report work done at the General Prospecting for the

week ending June 30th, as follows:During the last week the Prospecting party have been

exploring the central portion of Township 28, Range XXV, Algoma. The camp was moved to Andre Lake from which a large part of the Township is readily accessible.

The party has succeeded in locating two ranges of Helen iron formation about 3i miles North of the Bartlett and 53 chains North of the North West corner of Andre Lake. Tht; first range is very small as far as can be determined and is heavily drift covered. N'o stripping is being done on this for the present. The second range has been traced for a half a mile and strikes slightly South of East. A small outcrop of siderite has been discovered on this Range, and it will be given a more thorough examination.

On many parts of the Township small ranges of rustyweathering chert contai nirg some siderite and a little pyrites has been found.

Yourstnly. A.Hasselbring.GENERAL SUPT.

Kagpie Mine. Ont. L July 9th, 1912.

HHProspecting WeeVly Report.

R.W.Seelye. Manager Mines dept. Sault Ste.Karie.Ont.

Dear Sir,I beg to report work done at the Prospecting for the week ending

July 7th as follows:During the week work was continued on the Itenge "orth West of

Andre Lake and this range was traced for 3000 feet. So far nothing has been encountered on this Range except iron,formati on, no bodies of siderite or pyrites having been found.

North of Andre Lat"* t. h* Range can again be picked up. At this point there are intrusions of diabase into the Range and small patches of good siderite have been located. These patches are from 15 to 20 feet long. No extensive body of ore has as yet been found on the Range.

The Range has been greatly faulted and cut up by intrusions of diabase dyke. Trenching is being started to see if any large quantities of siderite can be encountered.

Yours truly. A.Hasselbring.GENERAL Sl-'PT.

Magpie Mine,0nt. Aug.10th, 1912. HH Prospecting.

R.Vv'.Seelye. Manager Mines Dept. Sault Sre.Marie. Ont.,

Dear Sir:-VVe have now completed the work on Brooks Iron Range N'o.l.

and have gained the following information:The range consists of Helen Iron formation and is from

80 to 170 feet wide and nearly three quarters of a mile,long. At the west it is cut off by a diabase dyke and at the east end, it drops into a lake and does not reappear. The surrounding country rock consists of Keewatin schists and greenstones. The bands of iron' formation strike east and west and dip northward about 90 degrees. Along the Southern edge of the formation is tebd of siderite and pyrite which is shown on the accompnying plan .

On the western portion of the range, there is also adeposit of siderite and pyrite 600 feet long and averaging 15 feet in width. Analysis of the samples taken from the deposits show sulphur varying from 1?# to 32/w with iron before ignition of 42;* and loss on ignition of 22™5, The ore runs in lenses, five of which have been located as follows, starting from the west end of the range.

Ore lens 400 feet long by 15 feet wide.One lens 500 feet long by 20 feet wide.One lens 400 f*et long by 25 feet wide.One lens 150'long by 20 feet wide.One lens 300'long by 25 f-et wide.

These ar* all shown on Plan S-6.The party is now located on Andre La'e and are drilling for

samples on Brooks NoJ3. They will also try to further trace Brooks range No.2. Running westward from the west end of Iron Range No.3. is a large body of rusty weather chert. No work has been done on this yet,

The party have also located a large quartz vein, mineralized with pyrites about hald a mile north of the three mile post on the western boundary of the township, that is, Township 28, Range 25.

A.Hasselbring,

J

Mines. Or.t. August 12th, 1HS.General Prospecting.

R.W.Seelye. Manager. Mines Sault Ste.liarie. Ont.,

Dear Sir:-

I beg to report work done by General prospecting parties for week ending Aug. ?th, as follows:

Goodwin and party have been working o.i Brooks Range No.2. They have gathered the following information. Brooks Iron Ranp* Ho.2. extends eastward as far as the large creek which rx:n? into the southwest corner of Andre Lake. There is a gap of about i of a mile between the East end of No.2 and the west end of Brooks Range No.l. There is on theeastern section of No.2. a body of siderite 25 feet in width and about 100 feet long, as shown up at present. Several trenches have been put in to determine the extent of this ore but the work was considerably delayed by heavy rains during the week and a smallamourt of additional work will be necessary.

The accompanying plan shows the range up to date. The trenches "N" and "O" have not yet been completed.

Some work was done on Iron Range No.3. dri lling it over so that samples could be blasted out. This work will be completed in a few days.

This party will then move to the north end of the Township (28 R XXV) in order to locate and axamine ,any iron ranges there may bo in that vicinity.

Little with one man made an examination of the Hamilton Pyrites claims and also spent some time around the Goetz claims near the Magpie River north of Helen Junction. Full reports covering these examinations will be forwarded to you later.

Yours truly,

A Hasselbring.General Superintendent.

Mines. Ont. August 12th, 1912.HS.General Prospecting.

R.W.Seelye. Manager. Mines Dept., Sault Ste.ferie. Ont.,

Dear Sir:-

I beg to report work done by General prospecting parties for week ending Aug. ?th, as follows:

Goodwin and party have been working on Brooks Range No.2. They have gathered the following information. Brooks Iron Range Ho.2. extends eastward as far as the large creek which runs into the southwest corner of Ardre Lake. There is a gap of about ^ of a mile between the Eawt end of No.2 and the west end of Breaks Range No.l. There is on theeastern section of No.2. a body of siderite 25 feet in width and about

100 feet long, as shown up at present. Severai trenches have been put in to dAermine the extent of this ore but the work was considerably delayed by heavy rains during the week and a smallamout of additional work will be necessary.

The accompanying plan shows the range up to date. The trenches "N" and "O" have not yet been completed.

Some work was done on Iron Range No.3. dri lling it over so that samples could be blasted out. This work will be completed in a few days.

This party will then move to the north end of the Township (28 R XXV) in order to locate and axamine any iron ranges there may be in that vicinity.

Little with one man made an examination of the Hamilton Pyrites claims and also spent some time around the Goetz claims near the Magpie River north of Helen Junction. Full reports covering these examinations will be forwarded to you later.

Yours truly,

A Hasselbring.General Superintendent.

Magpie Kine. Ont. Aug.lgth, 1912HHGeneral Prospecting Report.

R.W.Seelye. Manager i-iines Dept. Sault Ste.Marie.

Dear Sir:I be^ to report work done on the General Prospecting for

the week ending Aug. 14th, as follows:Goodwin and his party have been working during this week on

Brooks Range No.3.This range consists of a number of bodies of Helen iron

formation, from 20 to 100 feet in width and extending Rast South East for about three quarters of a mile, at a distance of i to i? of a mile North of Andre Lake. The Range is very much broken and faulted on account, apparently, of numerous intrusions of diabase. The bands of iron formation, when they can be distinguished, strike in the same direction as the Range and dip towards the North at an angle of about 75 degrees to the horizontal. On each side of the Range run bards of rusty weathering rocks and these continue Eastward ard Westward beyond the ends of the iron formation.

At intervals along the Range occur several lenses of siderate. The best of which is about 400 feet long and from 4 to 10 feet wide. The most Westerly ler.se is somewhat unique in occuring apart from any iron formation. It is fairly pure siderite and is about 20 feet wide byabout 120 feet long. Part of the siderite in this lense is very

high in sulphur.In the Southern end of Trench N, on the accompanying plan,

there is some small pockets of pyrite, but no continuous body was found.This party is nov; moved to the Northern part of Township

28 Range XXV. Exploration work has been started in this part of the Township, but has been greatly delayed by the continued rainy weather.

Little with oneman spent the week in exploring the extent of the siderite East of the Helen, which is referred to as the Elanor Lake deposits in the Government reports. Reports of the results of their work will be sent you later.

Yours truly. A.Hasslebring. GRCERAL SUPT.

jjj

•x/'Magpie Mine, Ont. Sept. 6th, 1912.

HH,, Weekly Report. General Prospecting.

H.W.Seelye. Manager Mines Dept. Sault Ste.Marie. Ont.

Dear Sir,I beg to report work done during the week ending August 31st,

by general prospecting party.The party was exploring ir. the North West part of Twp.26

Range XXV. An examination of the Gravelle claims was made, two quarrtz veins located and examined and several trails wi-.re cut in this portion of the twp.

No economic body of o r*- was found in the Gravelle claims. There are on tht property several small ou crops of Helen iron formation from l foot to 20 feet in width and of various lengths up to 200 feet. The formation is an interbanded silica and magnetite and greenstone schist on either side.

The jTuartz vein No. l was located as 62 chains North of the three mile post on Uie Western boundry of Twp.28, Range XXV. This vein outcrops at intervals for about 730 feet, though it is not certain that these outcrops belong to the name vein. It's width varies from 4 to 10 feet with an average of about 6 feet. The vein is mineralized with small crystals of pyrite and in some places occasional specks of galena waste noticed. The surrounding country rock is mainly greenstone, but in the immediate vicinity of the vein is a rusty weathering rock, apparently a Keewatin eruptive. A few chains to the North there is an extensive intrusion of diabase. Samples of vein and surrounding rock are being forwarded to you for assay.

•juaj-tz Vein No.2 which lies as shown on the accompanying plan South East of the Gravelle claims was given only a hasty exaination. It is frcrn l to 3 feet wide and contains considerable chalcopyrite. Itslength was not definitely determined, but it is apparently of small extent.

The country rock is granite on either side. Samples ofrithe vein are being forwarded to you.

cont'd....

5•L.

An outcrop of iron formation, shown as No.5-, about Nor '.i of No.4., was left unexamined when the party was called in.

The part of Twp.28, Range XXV, still unexplored consists roughly of a strip one mile wide between Elephant Lake, Spider Lake and the Northern boundry of the Twp., also a strip two miles wide extending along the Eastern boundry from the North East corner to the Th*e mile post.

All of the Prospecting crew 'nave been taken off this work, the outfit stored at Magpie and all work is discontinued August 31st.

Yours truly,

A.Hasselbring.

General Supt.

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