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52G14NE8866 52GI4NE8e51 PENASSI LAKE 010

REPORT

O N

MOUNTAIN ISLAND BAY CLAIMS PATRICIA MINING DIVISION

ONTARIO

June 12, 1970 W. G. Wahl Limited

Suite 1101, 302 Bay Street, Toronto 105, Ontario

June 12, 1970.

Mr. A. C. Mosher, President, Chimo Gold Mines Limited, Suite 1000, 11 Kinj Street West, Toronto l, Ontario.

Dear Mr Mosher:

Submitted herewith is a report on;

MOUNTAIN ISLAND BAY CLAIMS PATRICIA MINING DIVISION

ONTARIO

Ground geophysical surveys mapped two anomalous zones which are thought to be caused by infolded bands of conductive sediments. It is recom mended that the geophysical reports be filed for assessment credit.

2.

GENERAL

The Mountain Island Bay area of Sturgeon Lake is

located approximately 45 miles north of Ignace on Highway 599.

The survey was run over the following mineral claims:

218537^21854^ 218551- 218554'^ ^ ^

218541^ 2185.49' 218552 218555'

218545^ 218550 , 218553

which are held under option by Chimo Gold Mines Limited with

Mr. J. McNeil.

The geology of this area is shown as Geological Map

No. 2169 "Sioux-Lookout - Armstrong Sheet" by the Ontario

Department of Mines. Airborne magnetometer data covering this

'area is published in Geophysical Paper 1127-G "Witcomb" by the

Geological Survey of Canada. This area is coded under the

National Topograph Series 52-G-14.

A grid system comprising of 54,000 feet including tie

lines was carried out under the supervision of Mr. K. Kuhner

of Thunder Bay, Ontario, during the first week of May, 1970.

The baseline trends east-west with picket lines trending

north-south at 400 foot intervals. One hundred foot stations

were established on all lines.

3.

MAGNETOMETER SURVEY

The ground magnetometer survey was completed under

the direct supervision of D. G. Wahl, P.Eng., during the period

of May 18 to May 20, 1970. A Barringer GM 102 Magnetometer with

a sensitivity of 10 gammas recorded the total field magnetic

intensities at fifty foot intervals on all lines, in excess

of 900 stations were occupied.

The magnetic data was reduced to a local datum and

adjusted for magnetic diurnal. The data is presented on the

enclosed maps as corrected station values and as a contoured

interpretation of thece data.

The andesite flows have a low magnetic susceptibility

but are characterized by linear, trending anomalies marking

individual flows.

The pyroclastic rocks have a moderate magnetic

susceptibility in the range from 400 gammas to 800 gammas.

Associated with the pyroclastic rocks are strong

elongate units having a magnetic susceptibility range from 1000

to 1500 gammas. These elongate units are thought to be tuffs.

The syenite intrusive is characterized by very low

uniform magnetic susceptibility.

'"I

EM SURVEY

The electromagnetic survey was conducted by D. G. Wahl,

P.Eng., during the period from May 18 to May 20, 1970, employing

a Crone Radam VLF EM Survey Unit. This unit measured the

inclination or dip and the total field intensity with a sen

sitivity of l 0 of dip and 196 field intensity. The VLF station

used is located at Seattle, Washington, having a frequency of

18.6 KHz- All observations were taken facing w^st. Stations

were occupied at 50 foot intervals on the established grid.

Two conductive zoner. were mapped lying within the

andesitic flows. These anomalous areas will be discussed in

detail in a following section of this report.

GEOLOGY

The geology as published by the Ontario Department

of Mines was extended and defined by the geophysical surveys

and a compilation of the data is appended.

The property occupies a portion of the north limb

of an easterly plunging syncline of intercalated flows and

pyroclastic rocks. The rocks dip gently into the syncline but

the symmetry of the syncline is interrupted by an anticlinal

roll trending approximately east-west. This anticlinal roll

* l

e

it is felt might be the surface expression of the syenite

intrusive in the Mountain Island Bay area. 7* portion of

syenite intrusive outcrops on the shore of Mountain Island

Bay. This intrusive is also defined by the magnetometer survey.

The attached map shows the rocks and rock structures

as inferred from the field surveys.

ANOMALY l

This anomaly is located approximately 1000 feet

south of the baseline roughly paralleling the contact between

the andesite flow and pyroclastic rocks. It is characterized

by an increasing field strength accompanied with a strong dip

reversal. Anomaly l exhibits a very low magnetic susceptibility.

Attached is a section showing the inferred geology. This

anomalous zone is thought to be caused by an in-fold of con

ductive sediments.

ANOMALY 2

In general an increase in field strength is directly

related to an increase in the conductivity of the underlying

surficial debris and bedrock and is inversely related to the

resistivity of the causative body. It is felt that the clay

filled valley of Ethlouise Lake causes the increasing field

strength in the area of Anomaly 2. The possibility also exists

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i l

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that this anomalous zone could be similar in structure to that

of Anomaly l, representing the southern infold of the conductive

sedimentp flanking the anticline.

All of which is respectfully submitted.

Sincerely yours,

W. G. WAHL L

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SPEQAL PRO 52GMNEee66 ssGHNEeesi PENASSI LAKE

ASSESSMENT WORK DETAILS

Type of Survey.

Chief Line Cutter orA M^nU form li required for *och typ* ol *unr*y

Mr. K* Kuhner __ Thunder BayNome Addr***

Party Chief

Consultant.

D. Q. Wahl. P.Eng. Toronto OntarioNom* Addrett

W. O. Wahl, T. -TorontoCOVERING DATES Line Cutting.

Addr**iMay 8 to May 14. 1970

Field Geology or Geophysic, May 18 to May 20.1970

Office Juna A to June 6 P 1970^---——.^^

900

' INSTRUMENT DATA Make, Model and Type G. M. 102-A

Scale Constant or Sensitivity 10 qnnunaaOr provide copy of instrument data from Manufacturer's brochure.

Total Number of Stations Within Claim Group . 050-Number of Miles of Line cut Within Claim o* J. o

ASSESSMENT WORK CREDITS REQUESTED Geological Survey. .Days per Claim

Geophysical Survey—-*.::!— Days per Clnim

MINING CLAIMS TRAVERSED

218537 218546

218541 2 J P54Q

218545 218550

218551 218554

?1855? 210555

218553

DATE- June 23. 1970.

TfTTAl. 1]

f /' i / ' '.SIGNED t \ . f. ( ' '

Special provision credits do not apply to ftadiometric Surveys.

IP-Typo of Survey.

SPECIAL PROVISION

ASSESSMENT WORK DETAILS

GEOPHYSICAL - ELECTROMAGNETICA ••potato fotm l* required for •ocl, /p* of *urv*y

Chief Line Cutter or r. nr* T.*tnf Mr. K. Kuhner___________ThunderNorn.

Party Chief. D, Q. Wahl,P.Eng Toronto OntarioNorn* Addr*ti

Consultant. u. n. ar

COVERING DATES Line Cutting.Nan*

May 8 to May 14, 1970Addrci*

Field Geology or Geophysics .

Office Juno 4 to June 6, 1970

May 18 to May 20, 1970

INSTRUMENT DATA Make, Model and Type . Crone VLF - EM Radem

Scale Constant or s^.i.iv;.,, l* of dip and 1*4 of total field strengthOf provide copy of instrument data from Manufactnur's brochure.

850 8.16 Total Number of Stations Within Claim Croup ———————Number of Miles of Line cut Within Claim Group—————.

ASSESSMENT WORK CREDITS REQUESTED

MINING CLAIMS TRAVERSED

218537 218546

Geological Survey. .D ay B per Claim

Geophysical Survey——20— Days per Claim

218551 218554

218541 218549 218552 218555

218545 218550 218553

DATE June 23. 1970

TOTAL

SIGNED ^f y \ x

Special provision credits do not apply to Radiometric Surveys.

63.2359

:- 416 f:^ TEirPHOriE- 365-691*

ON

MlUilir. (Mil) ; I-II.MI. .11

February 5th, 1971.

Mr. W.A. Buchan, Mining Recorder, Court House, Sioux Lookout, Ontario.

Re: Mining Claim No. PA. 2185^5 et al,South-West Part of Sturgeon Lake Area

Dear Sir:

The Geophysical (Kagnetometer and Electromagnetic) assessment work credits as listed with my Notice of Intent dated January 20th, 1971, have been approved as of the date above. Please inform the recorded holder and so indicate on your records.

Yours very truly,

Fred W. Matthews, Supervisor, Projects Section.

c * c. Chimo Go3.d Mines Ltd., 1000 - 11 King St., W., Toronto, Ontario.

c. c, W. G. Ytahl Ltd., Suite 1101, 302 Bay Street, Toronto, Ontario.

c. c, Mr. H. L. King,Resident Geologist, ^08 Robertson Street Kenora, Ontario.

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SEE ACCOMPANYING MAP(S) IDENTIFIED AS

LOCATED IN THE MAP CHANNEL IN THEFOLLOWING SEQUENCE

(X)

t*''y. . ^

I^te^xsafe ,;: ," ;.:. -. -;... ••• i A--V- . ,: mm- ; —^ -

K&*?--'.-

k, FOR ADDITIONALE

H-.1 -.'' INFORMATION

SEE MAPS:

6 1 A/ Mt- 00 5

212845

218555

2.18553

2\855218552

218550

--No 3 of

1855

No ^ fcrei8549

218546

218545

MOUNTAIN ISLANDBAY

STURGEON LAKE

2.18541

LEGEND

SrENlTE

PYROCLASTIC ROCKS

FLOW

SYMBOLSETHLOUISE LAKE

NFERRED CoNTACT

FOLD

CoMoucT\vE ZONE

c- -0051 *l

-v Si Sr S?CHIMO GOLD MINES LIMITED

GEOLOGYMOUNTAIN ISLAND PROJECT

WGWAHL LTD JUNE 4 197052G14NEW66 52G14hEe051 PENASSI LAKE

MOUNTAIN ISLANDBAY

STURGEON LAKE

ETHLOUiSE LAKE

CHIMO GOLD MINES LIMITEDMAGNETOMETER SURVEY

MOUNTAIN ISLAND BAY PROJECT5CAL E : l INCH TOEOOFfET FIELD VALUES JNGAMWA5

WGWAHL LTD. JUNE 4,1970S2G14NE8666 S2GI4NE8051 PENASSI LAKE

MOUNTAIN ISLANDBAY

STURGEON LAKE

ETHLOUISE LAKE

CHIMO GOLD MINES LIMITEDMAGNETOMETER SURVEY

MOUNTAIN ISLAND BAY PROJECTSCALE : l INCH TO SOD FEET CONTOUR INTERVAL IOO

WGWAHL LTD. JUNE 4.197052G14NE0866 52G14NE8851 PENASSI LAKE

MOUNTAIN ISLANDBAY

STURGEON LAKE

ETHLOUISE LAKE

DIP NCH TO ao DEGREES

CONTOUR INTERVAL: SS'/oNORMAL FIELD STRENGTH

CHIMO GOLD MINES L MITEDE M

MOUNTAIN ISLAND P

vV.GVVAHL LTD Mf 4I9?052G14NE0966 52G14NE*a5t PENASSI LAKE