3aoesNEe*34 2. use i TANNAHILL 010

EM16R SURVEY REPORT

OR

GRID TA2

TANHAHTLL TOWNSHIP. ONTARIO

LARDER LAKE MINING DIVISION

DISTRICT OF TIMISKAMING

NTS 32D/5

LATITUDE: 48 PEG. 25'

LONGITUDE: 79 PEG. 38'

RECEIVED

By: John Kovala

TANNAHILL 01OC

TABLE OF CONTENTS

PAGE

SUMMARY

LOCATION AND ACCESS

PROPERTY DESCRIPTION

TOPOGRAPHY AND VEGETATION

GEOLOGY

PREVIOUS WORK

SURVEY PROCEDURE

THE VLF-EM16R (RADIOHM) SURVEY METHOD

SURVEY RESULTS

RECOMMENDATIONS AND CONCLUSIONS

BIBLIOGRAPHY

CERTIFICATION

l

1,4

4

5

6,7

7

8

9

g12,13

14

FIGURES:

1.

2.

3.

4.

ENCLOSURES:

1.

Location Map

Claim Location

EM16R

EM16R Specifications

Geological Map

2

3

10

11

Back Pocket

SUMMARY

An EM16R survey was carried out over four mining claims lo

cated northeast of Kirkland Lake in east central Tannahill

Township. The EM16R unit is used to determine the apparent

resistivity of the earth by a magnetotelluric measurement of the

radiated field from a remote radio transmitter.(Scott 1974) Sur

vey data produced is almost equivalent to normal resistivity

equipment.

Survey results indicate low resistivity and phase angle

values occur over most of the property. This is possibly due to

the depth of penetration being severely limited by a thick layer

of conductive overburden consisting of glaciolacustrine clay and

muskeg. A small resistivity high in the south west corner of

claim L 844027 is interpreted as a possible change in overburden

composition (ie. sand and gravel).

LOCATION AND ACCESS

The TA2 property is located northeast of Kirkland Lake in

the east central portion of Tannahill Township. The Magusi River

flows south through the central portion of the property then

swings east along the southern boundary towards Dokis Township.

(D

GRID LOCATION MAP

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(2)

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TOWNSHIP OF

TANNAHILLGRID LOCATION MAP

TA 2DISTRICT OF

COCHRANE

LARDER LAKEMlNltttHHVlSHJH

Access is via helicopter. Two landing pads have been cut,

one is located on the east bank of the Magusi River at

LH-40E/1 + 25N and the other is located centrally on the western

part of the property at L250W/0+75N.

A winter road constructed for the OGS in 1988 crosses the

property. Commencing along the Harker-Holloway road in northern

Elliot Township, the winding road is followed from the Harker-

Holloway northeast to approximately the 1.5 mile post of the

Tannahill-Holloway Township boundary where the road crosses the

Magusi River. At this point the road turns southeast towards the

property.

PROPERTY DESCRIPTION

The TA2 Grid consists of 12 unpatented mining claims located

in Tannahill Township, Larder Lake Mining Division. This report

covers the four claims L 858412, L 858417, L 858420 and L 844027.

Three of these claims are located on the west side of the Magusi

River, and one is located 1/2 miles to the east on the east side

of the Magusi River.

(4)

TOPOGRAPHY AND VEGETATION

A high esker ridge 200-300m wide consisting of sand and

gravel runs north and south along the east side of the Magusi

River between the single eastern claim mapped and the three west

ern claims mapped.

The esker ridge is flanked by low lying glaciolacustrine

clay most often covered by wet muskeg swamp, A clay and sand

ridge 3 to 7m high runs NE to SW across the northwest half of

claim L 858412.

High ridges of outcrop occur along the western boundary of

the three western claims mapped and north of the single eastern

claim.

All drainage is into the Magusi River which flows southeast

towards Dokis Township. The river is 15 to 20m wide with many

tight reversing meanders. Banks are steep ranging in height from

l to 3m and consists of dominantly clay.

65?S of the area is covered by low lying swamp containing

spruce, pine and tagalders. Dryer areas are covered by mixed

bush, pine stands and the occasional poplar stands.

(5)

GEOLOGY

Tannahill Township is underlain by Early Precambrian

(Archean) volcanic rocks. The rocks are dominantly calc-alkaline

(Blake River Group) suite flows and pyroclastics. Magnesium

Tholeiitic flows (Kinojevis Group) rocks occur in the northwes

tern corner of the township. In this area occurs the Blake River

Group Kinojevis Group contact.

The Blake River Group volcanics form a large east trending

synclinorium that extends from Benoit Township east into the

Noranda area. The source of the volcanics is postulated as being

a domal volcanic vent located along the axis of the synclinorium

in Clifford and Ben Nevis Townships.

The calc-alkaline volcanic rocks consists of basalt, an

desite, dacite and rhyolite. 80?S of this is basalt and andesite.

The general strike of these rocks is northeast with tops to

the south. An eastwest anticli

ne occurs in southern Tannahill Township with a complimentary

syncline occurring to the north. These are interpreted as local

folding that reflect the domal volcanic centres to the south

(Jensen 1978). Northeast and north northwest regional faults

cross the area.

(6)

Circular stocks of gabbro, quartz gabbro and diorite occupy

8 to IQSi of the Township. 2 to 4?S of rocks in the area are

syenitic intrusives. The syenitic intrusives occur only in the

south western part of the Township.

The only outcrops near the area of the survey occur west of

claim L-844027 and appear to be dioritic and along the north

boundary of claim 858420 were andesite outcrops.

PREVIOUS WORK

Geox conducted magnetic and VLF-EM surveys over four claims

to the west of the Magusi River in July and August 1980 for Fal

conbridge Limited, The surveys located a magnetic anomaly on the

southern claims and weak VLF anomalies to the north.

LAC Minerals Ltd. has carried out line cutting, a magnetic

survey, a VLF-EM survey and geological mapping.

(7)

THE VLF-EM16R (RADIOHM) SURVEY METHOD

The EM16R measures the ratio and the phase angle between the

horizontal electric and magnetic fields of the wave propagated by

a distant VLF radio transmitter in order to determine the

electrical resistivity of the ground. In the case where the

earth is of uniform resistivity there is a phase angle of 45 DEG

between these field components. Where horizontal stratification

exists and the earth is not of uniform resistivity the phase

angle will generally decrease when a lower more resistive layer

is present and increase when a more conductive layer is present.

The effective penetration depth of this survey method

depends primarily on the electrical resistivity of the earth and

very slightly on the frequency of the transmitting station. As

can be seen in Fig 3, the higher the terrain resistivity, the

greater the effective depth of penetration.

(8)

From the low resistivity and phase angle values observed

over the property, it is apparent that the depth of penetration

was severely limited by a layer of conductive overburden (glacial

lacustrine clay and muskeg).

The resistivity high observed in the southwest corner of the

claim L 844027 is located over a topographic high and is likely

the result of a change in overburden composition and thickness.

RECOMMENDATIONS AND CONCLUSIONS

The presence of a thick zone of conductive overburden con

sisting of clay and muskeg appears to have severely limited the

depth of overburden penetration by this survey method. This is

substantiated by the low resistivity and phase angle values ob

served over the property except in the southwest corner of claim

L 844027.

The resistivity high is probably the result of a change in

overburden (ie. sand and gravel) and a corresponding topographic

high.

(9)

Figure 3

EM16R SPECIFICATIONS

MEASURED QUANTITY

*

•Apparent Resistivity of the ground in ohm-meters•Phase angle between Ev and Ht , in degrees x

RESISTIVITY RANGES

i

PHASE RANGE

RESOLUTION

OUTPUT

OPERATING FREQUENCY

INTERPROBE SPACING

PROBE INPUT IMPEDANCE

DIMENSIONS

WEIGHT

• 10 - 300 ohm-meters• 100 - 3000 ohm-meters•1000 - 30000 ohm-meters

0-90 degrees

•Resistivity! i 21 full scale•Phase i ± 0.5Null by audio tone. Resistivity and phase angle read from graduated dials.

15-25 kHz VLF Radio Band. Station selection by means of rotary switch.

10 meters

100 Mn in parallel with 0.5 picofarads

19 x 11.5 x 10 cm. (attached to side of EM16)

1.5 kg (including probes and cable)

(li)

Geonics

1979:

BIBLIOGRAPHY

Operating Manual for EM16R VLF Resistivity Meter

Geonics Limited, Revised 1979

Jensen, L.S.:

1978: Geology of Thackery, Elliott, Tannahill and Dokis

Townships, District of Cochrane, Ontario

Geological Survey Report 165 j Accompanied by Map

Number 2367 and Number 2368.

Scale l inch to 1/2 mile.

Kovala, J.

1988 VLF-EM Survey Report on Grid TA2, Tannahil

Township, Larder Lake Mining Divsion.

Assessment Report.

Lee, Hulbert, A.:

1979: Northern Ontario Engineering Geology Terrain Study

Data Base Map, Larder Lake,

O.G.S. Map 5031; Scale 1:100,000.

(12)

Walker, J.:

1986: Magnetic Survey Report on Grid TA2, Tannahill

Township, Ontario, Larder Lake Mining Division

Assessment Report.

(13)

CERTIFICATION

I, John M. Kovala certify:

1. That I reside at 7 Teck Hughes Property, Kirkland Lake,

Ontario.

2. That I have completed the B.Se. program in Geology at

Laurentain University.

3. That I have been employed in the Exploration Industry

since 1983.

Signed

John M. Kovala

Project Geologist

(14)

Mimslry ofNorthern Developmentand Mines

Ontario

Report of Work J DOC

(Geophysical, Geological, j Wg Geochemical and ExpendnUiej) 1

- ~^J/5^-*^ ̂ ^--X^^L^^-T^-VType of Survey(s)

Resistivity EM16-R ^Claim Holder(s)

LAC Minerals Ltd. J7 /Y*/2. - Townsh

SI 9 8-1 ^i. JL *j ^ -*-P o

Jhi~l11 -. .Prospector s Licence No.

T-664Address

91 Duncan Avenue, KIRKLAND LAKE, Ontario P2N 1Y2Survey Company

LAC Minerals Ltd.jOate of Survey (from S, to) ITotal Miles of li

. . - . . .. . . fi4 1 M. i 86 i 'W l W fift. 4.525 krName and Address of Author (of Geo-Technical report)

Jim Whelan 6 Baron Avenue, KIRKLAND LAKE. OntarioCredits Requested per Each Claim inSpecial Provisions

For first survey:

Enter 40 days. (This includes line cuttingl

For each additional survey: using the same grid:

Enter 20 days (for each)

Man Days

Complete reverse side and enter totaKs) here

Airborne Credits

Note: Special provs.ons credits do not ;ipp:y to Airborne Sn'/oys

Columns at rightGeophysical

- Electromagnetic

- Magnetometer

- Radiometric

- Other

Geological

Geochemical

Geophysical

- Eteciromagnetic

- Magnetometer

i - Radiometric

' - Other

: Geological

Geochemical

RadiOfneif tc

Days perClaim

20

Days per Claim

Days per Claim

-~-.--—

Expenditures (excludes powei stripping)Type of Work Pe'tormeci

Performed O'l Oair^ilsl

Totai i xoe'- -. -j' -ji

S-i C 1 1 0 '' S

1 .-1 ,. ^ ' ' ..- ••'- ' - ,:

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October 18, 1988 d

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or witnessed same uu' ^3 snd 01 at in? 1Name and Postal Aaaress o* PerJohn Kovala

91

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Mining Claims Traversed (List in numerical sequence)Mining Claim

Prefix Number

L 858412Sil:-. 858417V-iv'X 858420

844027

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ON1ARIO GEOLOGIC ASSESSMENT

OFFICE

JAN 12 i'

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Date CertifiedDuncan Avenue, KIRKLAND LAKE, Ontario P2N 1Y2 October 18, 1988

1362 (85/121

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. M-32 DATE OF ISSUEBEN NEVIS TWPAUG .121988

NOTES '••f

\ 400 surface rights reserv.ilion along Ihi? shores of all, f

ljtkt!s and fivers t '

^~~

NOTICE OF FORESTRY" ACTIVITY JTHIS TOWNSHIP ; AREA FALLS WITfckW THE .———;

AND MAY BE SUBJECT TO FORESTRY OPEf^TIONS.THE MNR UNIT^FORESTER FOR THIS AREA.CANfcE!CONTACJED AT: P.O. BOX 129 ,^ 'i ^

'' X SWASTIKA, ONT.7* ( . i ^ L POK ITO * i i ~ 705-642-3222 ^ ^v K

LEGEND

HATLMTLD TOR SUWACfc RKjHIS ONLY

LEASEI

LtCtNSE Oh OCCUPATION

CHOWN LAND SALES .

IOCATLDLAND

CANCELLED

MINING RIGHTS ONLY

SURFACE RIGHTS O^LY

HIGHWAY 4 ROUTE NO.

ROADS

TRAILS

RAILWAYb

POWER LINtS

MARSH OR MUSKEG

MINCS

only with -..umiUL'i o/

TOWNSHIP OF

TANNAHILLDISTRICT OF

COCHRANE

LARDER LAKEMININU DIVISION -

SCALL ; 1 INCH 40 CHAINS (1/2 MILE)

on R W NOBLE

JAN 27, 72PLAfJ NO M-390

MINISTRY OF NATURAL RESOURCESviTxvEYS ;.;.D MA

600N

500M

400/g

300N

200N

ICON

,oos

400S

500S

IOON

BLOtOO

IOOS

200S

1981

INSTRUMENT GEON/CS EMI6R

TRANSM/TTEW AT ANNAPQUS MARVLAND ei.4K*ii

50, /OO, 500, 1000 OHMMETEff CONTOURS

RESlSTIVITr PHASE ANGLE

32D05NE0a34 2.11981 TANNAHILL 210

VLF APPARENT RESlT/VlTY

JA 2 GRID

TANNAHILL TWP

SCALE i: 5000