4acessw0ie7 e04s JACOBSON ,, 010

REPORT ON THE

MAGNETIC AND ELECTROMAGNETIC SURVEYS

MEATH PROJECT, GROUP C

JACOBSON TOWNSHIP

MISSANABIE AREA, ONTARIO

FOR

AU6 2 6 1983

MINING LANDS SECTION

MATTAGAMI LAKE EXPLORATION LIMITED

MAY, 1982 BY: D.B. SUTHERLANDCONSULTING GEOPHYSICIST

42C88SW0ie7 eC45 JACOBSON

INDEX

INTRODUCTION l

LOCATION S ACCESS l

GENERAL GEOLOGY 2

SURVEY INSTRUMENTS 3

DISCUSSION OF RESULTS 4

SUMMARY S RECOMMENDATIONS 4

POCKET l - MAGNETIC COMPILATION Scale: l" = 2 00'

2 - ELECTROMAGNETIC MAP

400' SEPARATION, 1777 Hz l" = 200'

3 - ELECTROMAGNETIC MAP

400' SEPARATION, 444 Hz l" = 200'

- l -

INTRODUCTION

Group C is a 4 claim group staked to investigate

an isolated, 4 channel, Airborne response. A grid of N-S

lines, spaced at 400 foot intervals, has been cut over the

claims. Surveying has been carried out with magnetics and

electromagnetics over approximately 1.8 line miles of picket

line. The surveying was carried out by the crews of Mattagami

Lake Exploration Limited on March 25th, 1982.

LOCATION AND ACCESS

The Missanabie area, which for the purpose of this

study, covers thirteen townships, is located about 40 kilo

meters northeast of Wawa and about 208 kilomters' north of

Sault Ste. Marie. The area is readily accessible by road

and rail. The town of Missanabie is accessible by Highway

651 which joins Highway 101 to the south, about 65 km east

of Wawa. The town of Goudreau is accessible from Wawa, via

an indirect route from the north which connects to Highway 11.

Gravel surfaced roads or more commonly rough lumber

ing roads provide access to much of the area from the town of

Missanabie and Goudreau which themselves are not connected.

Missanabie in West township and Lochalsh in the

northwest part of Riggs township, are on the Canadian Pacific

Railway. In the western part of the Missanabie area, the

Algoma Central Railway services Goudreau and Dubreuilville.

- 2 -

Group C lies in the SE corner of Jacobson Township

about 4 miles south of the Goudreau Highway.

GENERAL GEOLOGY

The Missanabie area is predominantly underlain by

rocks of early Precambrian age. Thick and complex volcano

genic accumulations of subaqueous mafic flows and pyroclastic

rocks, felsic to intermediate pyroclastic rocks, and locally

derived metasediments underlie most of the area. This meta-

volcanic belt is a part of the northeastern extension of the

Michopicoten metavolcanic-metasedimentary belt. Minor iron

formations are present at the top of the mafic metavolcanic

sequence.

Complex grantic batholiths consisting predominantly

of folidated to gneissic granodiorite and trondhjemite, border

and intrude the metavolcanics on the north, northwest and

central south regions of the Missanabie area. Small stocks

and sills of quartz-feldspar porphry and granite, and several

large granodiorite stocks also intrude the metavolcanic units.

A single hornblende syenite stock intrudes the metavolcanics

at the border of Meath and West townships. Probable sills

occur as elongated masses of dioritic rocks in the meta

volcanics of the southwest townships.

Both the metavolcanic-metasedimentary sequence and

the granitic batholiths are cut by abundant north to north

west trending diabase dikes, a few northeast trending diabase

dikes a prominent northeast trending quartz diorite dike, a

fairly large olivine-rich gabbro stock in Riggs Township, as

well as several small ultramafic stocks and sills.

Unconsolidated Pleistocene sediments, consisting

of ground and terminal moraine and glaciofluvial and glacio

lacustrine deposits are extensive.

The metavolcanic-metasedimentary rocks are metamor

phosed to lower greenschist facies in the interior of the belt

and to high greenschist-lower almancine-amphibolite facies

near felsic intrusive rocks.

Structural information in the mafic and felsic meta-

volcanic and metasedimentary belt is sufficient for structural

interpretation in only some regions of the Missanabie area.

The identifiable fold pattern appears consistent with the

general folding of the whole Michipicoten belt, however,

locally fold trends have been controlled by and certainly

complicated by the intrusion of granitic rocks.

SURVEY INSTRUMENTS

A direct reading McPhar Fluxgate instrument was

used to measure the vertical field to an accuracy of 10

gammas.

An apex MaxMin II electromagnetic unit was used

for the horizontal loop survey. Operating frequencies were

444 and 1777 Hz with a coil separation of 400 feet. The in-

phase and quadrature components were measured to an accuracy

of l \ o f the primary field.

- 4 -

DISCUSSION OF RESULTS -

A single, short conductor, Zone A has been inter

preted from the electromagnetic data. It displays a depth

of 220 feet at the high frequency, but only 160 feet at the

low. The indicated conductance is 30 mhos at 1777 Hz, but

only 12 mhos at 444 Hz. This may be due to overburden inter

ference but in any case, the lower frequency estimate of 12

mhos is considered the more reliable.

Zone A appears to terminate near 12E where a 1000

gamma magnetic high trends NNW across the grid. The magnetic

high probably indicates a diabase dike and Zone A may term

inate at this structural feature.

Because of its low conductance and short strike,

Zone A is considered a second priority target.

SUMMARY S RECOMMENDATIONS

Zone A is a short, E-W trending conductor that

correlates closely with an isolated Airborne Anomaly 710-C.

It does not correlate with any strong magnetic features, but

the west end of Zone A appears to terminate near a strong NNW

magnetic high which probably represents a dike.

Zone A displays a conductance of only 12 mhos and

a strike length of 400 to 600 feet. Consequently, it is regarded

as a second priority target.

Respectfully submitted

X

D. B. SUTHERLAND CONSULTING GEOPHYSICIST

x

'

MAY, 1982 .

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Ministry ofNaturalResources

Ontario

GeotechnicalReportApproval

File

Mining Lands Comments

To: Geophvsto -AComment!

[IjfApproved With to tee again with correction*Slgnatu

DTo: Geology - ExpendituresComm*nti

fj Approved Q W ith lo M* again with corrtctlontSignature

To: Geochemistry

Comment!

Approved [J W ith to lee again with correction*Signature

-: f|To! Mining Lands Section, Room 6462, Whitney Block. (Tel: 5-1380)

( ; 1693(81/10)

Ontario

Ministry of Natural ResourcesGEOPHYSICAL - GEOLOGICAL - GEOCHEMICAL

TECHNICAL DATA STATEMENT

File.

TO BE ATTACHED AS AN APPENDIX TO TECHNICAL REPORTFACTS SHOWN HERE NEED NOT BE REPEATED IN REPORT

TECHNICAL REPORT MUST CONTAIN INTERPRETATION, CONCLUSIONS ETC.

GeophysicalType of Survcy(s) - Township or Area . Claim Ilolder(s) _ Mattagami Lake Exploration Limited

Jacobson

Mattagami Lake Exploration Limited Author of Report , D - B - Sutherland -——————————— Address of A..trmr 9?5 Mt. Pleasant Road. TorontoCovering Dates of Survey.

Total Miles of Line

March 2 5 t O 1982(lineculting to office)

2.5

SPECIAL PROVISIONS CREDITS REQUESTED

ENTER 40 days (includes line cutting) for first survey.

ENTER 20 days for each additional survey using same grid.

Geophysical—Electromagnetic.

—Magnetometer—-

— Radiometric———Other—.————

DAYSper dura

40

20

Geological.Geochemical.

AIRBORNE CREDITS (Special pioviiion credit* do not apply to airborne lurvcyi)

Magnetometer. .Electromagnetic . Radiometric

DATE:

(enter daft per claim)

SIGNATURESAuthor of Report or Agent

Res. Gcol.. Qualifications o

Previous Surveys File No. Type Date Qaim Holder

GROUP C

MINING CLAIMS TRAVERSED List numerically

SSM .63.5.84.9...(number)

633849

633850

633851

.RECEIYI.D

TOTAL CLAIMS.

GEOPHYSICAL TECHNICAL DATA

GROUND SURVEYS — H more than one survey, specify data for each type of survey

Number of Stations M a S- Station interval. 1 00 ' ' 5 0 '

Profile scale ______ Ll

^ E- M - 99 .Number of Readings ,Mag. 169; E.M. 596 ^Line spacing___^00 —-^.-——^________

Contour interval 2 SO gamma^

OH W 23 C

S

McPhar Gluxgate

10 gammasGraphical

Instrument .—- Accuracy — Scale constant Diurnal correction method Base Station check-in interval (hours)———T.^f?————————-—.——--———-——-—-———--.- Base Station location and value Readings were tied in to predetermined,

base line stations

oSzo <5 O t*

w*m

Instrument Apex MaxMin IICoil configuration Coil separation — Accuracy ____. Method: Frequency___~.

Horizontal Loop _____ - -400

i nD Fixed transmitter

444 and 1777 HzD Shoot back In line D Parallel line

Parameters measured_.(ipccify V.I.F. station)

aturc

c*d

Instrument m

Scale constantCorrections made _._.__.._____—

Base station value and location

Elevation accuracy—

H

UJf at

InstrumentMethod D Time Domain Parameters - On time __ ——— ..

~ O ff time- Delay time .-.—-

- Integration time

PowerElectrode array Elcctrodle

D Frequency Domain

Frequency ———— , .,

— _ . _ Range

Type of electrode ~ _ —

lift

1982 09 24 2.3021

Mining RecorderMinistry of Natural Resources75 Elgin StraatBox 669Sault Sta Maria, OntarioP6A SK2

Dear Madam:

We have received reports and maps for a Geophysical (Electromagnetic and Magnetometer) Survey submitted under Special Provisions (credit for Performance and Coverage) on Mining Claims SSM 633848 at al in the Township of Jacobson.

This materiel will be examined and assessed and a statement of assessment work credits will beissued.

Tours very truly

E.F. AndersonDirectorLand Management Branch

Whitney Block, Room 6450Queen's PsrkToronto, OntarioM7A 1W3Phone: 416/965-1316

J. Skuraisc

cci Mattagami Lake Exploration Limited Toronto, Ontario

cct Mattagami Lake Exploration Limited Timmins, Ontario

ccl D.B. Sutherland Toronto, Ontario

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42C08S*eie7 C945 JACOBSON 200

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GENERAL LEGEND

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CLAIM POST ( LOCATED)

WITNESS POST

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MEATH PRO

ATION LTD

OUP 'C'

JACOBSON Twp

MAGNETOMETER SURVEY

OPERATOR: D. MELANSON

INSTRUMENT' McPHAR M-700

DATE ' MARCH 1982

DRAWN' R KRUSE

SCALE' l" s 200'

DATE' MAY 1982

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FREQUENCY : 444 HzOP

CONDUCTOR TRACE

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MEATH PRO

ATION LTD

ROUP 'C'

JACOBSON TwpHORIZONTAL LOOP SURVEY

444 Hz 400' COIL SEP.SURVEY BY; D. MACLEAN

INSTRUMENT ' APEX MAX-MIN I

DATE' MARCH 1982

DRAWN' R K RUSE

SCALE' l": 200'

DATE' APRIL 1982

42C08S*ai87 B*45 JACOBSON 210

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IN PHASE -"-"^" ~~"^-.

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1777 Hz 400'COIL SEP.SURVEY BY' D MACLEAN DRAWN' R KRUSE

INSTRUMENT APEX MAX-MINU SCALE' l" * 200'

DATE' MARCH 1982 ' DATE' APRIL 1982

42C08SW0I07 C045 JACOBSON 220