i '' ' ' ' , ' ' . ' . mentor bxp3oration.-ft development

ft42Fe4NWee31 63.4Se MANITOUWADGE LAKE

General

This property is situated about 10 miles

northeast of the important base metal

of the Manitouwadge area* Active

and mapping of the property was undertake^

during May end June. 1954, ,* , v

Property end Title ' ! ;--*.- - : - ..., ' . ' "'., "v^ -'VV*;;-/-'. --;; ' ; '.'

This group consists pf 15 unsurveyed

mining claims numbered TB 48376-77-78^79*80-0*1,

TB 48394-95-96-97-98-99-400-01-08 inclusive.":V..f! , v . ' , 4 ' ., . ' , - '. | ' ' ' . . .' " , ., " V'-, n i '' ' ' '

These c lair s total approximately 740 acres Jn area;, ,

They are held in the name of; v V ^ *" ; ' i *. ' '"'f '-k , ' ' . ' .

Mentor Bxp3oration.-ft Development Cd. Ltd.,' ' ' , ". ' " -v ' ;.|-- , . f ; . ' *s : -'

Suite '1010, ' : .' '" . " :; ;'- : " . . . r"''"' ;: : t'(

1QQ Adelaide ,Stf vf ̂' ' : .. .. , L : '.' :":? : . *- -:.-" \-.- ..; .

Toronto, Ontario. \- -. ' , ' - ' .'.'' ". -- '' : i : t.'-,

Looat ion and Acees'a

The property is located* in the ijorth ̂ entfal

part of the Nama Creek Area, District of Thunder

Bay, P*rt Arthur Mining Division^ Ontario^ aa

shown in the Key Map of the area which accompanies

the Geological Plan.

Access to the property is without difficulty. r .

It is reached by an excellent road fromiCamp 1^ some

8 miles west. , Camp 12, operate^ by M^^athnh Pulp

010

—2—

and Paper Company Is connected to Stevens on

Canadian National Railroad by an excellent

gravel road. All roads in the area are us ad

through the courtesy of the Marathon pulp and

Paper Company who will for a minor consideration•' '' ' . - ' - ' V ' ''i' ' ' " '

transport men and equipment from rail td the i

immediate vicinity of the property*

Physical Featurest ' ' ' ' .' ;1 ^ " - " . ' i - ' ' . ' - ' '

The property covers tin area of low relief ,

Much of the property is , covered by deep sand,

and boulder deposits. Road building material is

therefore abundant. The tree growth ia

birch and poplar except in a few will d/ined * ,A . ' : ' ' '' . ' .•-'••:."."''..-' :'''-

depressions w4ere alder swamps occur. ,

Geology of the Property ^ '

The rock types underlying the Ifema Creak

Group are similar to those occurring in the

surrounding area. They consist only of two ,

types; viz, grey granite and paragnelss rGranite . ' ' •'',-.\ 1 '- - ^ . ••••^•;VV,'"^ ; ', " ' : ^ - -

The gronite occurring on the property is" k. '' . , ' . ' ' ' . : - :- . i t , , ' ' ' ' '"

a medium grained type, grey to very p41e pihlc lii

colour. The ferromagnesian minerals are completely.. - '. '" l ' . ''. . : '- - ' ' : •••.-•; . ' . t' , { ' -. ;.

accessory consisting chiefly of hornblende and biotite..,:- - , ' ' f. ., ' ' .

Near the gneiss contact many gneiss Inoluslons . -oo^pui*^ '?

The contact itself shows rather Intense 'assimilation' ' k " ' : h : " '' 'i' "' '"' ' , -' S ' "'' ^ ' j' '

end is therefore somewhat indsfinitei . , "'

-3-

The gneiss bands while chiefly'of a

nature have many variations from chloritic to

quartzitic typea. ,

Structure ?

The paragneiss occurs as small narrow

roof pendants in the surrounding granite, they

are the west extensions of the bodies occurring1 '" : ' "' i1 "'

on Sudbury Contact Mines Ltd., group lying ,

immediately to the eaot. They occur In low lying

muskeg end alder swamp areas. The banding ,is

parallel to the trend.

Exploration ' - • i -,-"- ,.., - . ,. , /\ ,: ' l

The geology was mapped using basa and travBrfe•.' ' j - ' 1; .' ' *

lines surveyed previously for electrical exploration!;" '; : *. ' - ' ' - 'i,," . "''' ' " ' * k '

The property has been thoroughly prospected'aM' s'', ' - :: . \'. ' ' ' ~ ' i" -'

stripping of light overburden pdrf 6naedjf ; No.^

trenching or rock bflsvstiag was undertaken.

42F04NW8031 63.450 MANITOUWADGE LAKE 020

This property is situated about S miles nofrth' ' ' ' , ,''*" ' . ' ' ' L ' .. ' ' ' - - '

of the important base metal discoveries of the ' - ?

Manitotiwedge Area. Active prospecting and mapping '

of the property was undertaken during |*uly, 1954.' : '' , . . .1 ' 'j" '.. . ' ..H? "

Pr opert y J* nd Tit le '

This group consists of 88 uiisurveyed mining*

claims numbered TB 49015-16-17-18-19-20-81-38-23

TB 49027-28-89-30-31

TB 49045-46-47-48 ,

TB 49054-55-56

TB 49068-63-64 '- j * ' , ' ' ' '

i TB 49067-68-69-70 '' - ' : ' ; i ?' ' ' '

These claims total approximately 1030 aor/es In area.

They are held in the name of;

Mentor Exploration fc Development Co.

Suite 1010

100 AtUlflide St. W., A

Toronto, Ontario.••i . , \ . - . . ' - .-

and '

The property is located iri the northern:' . ,. - ' ' i/; ' ' '' ". - ' *

pnrt of \\e Manitouvradge Lake Area, District of Thunder

Bay, Port Arthur Mining Division, Ontario ifl shown in

the KeyJfep which accompenias this report.

l l ll l l l l l l

l l l l ll l

-E-

Transportation to the property la by means of

Air, using, Rabbitskin Lake; or by trail from the

south end of Imbbitskin lake to the property of

Oeco i'.ines Ltd., and thence by road south to the

main 1:5 no of the Canadian Pacific Railroad.

Construction has corrrnenced on Canadian National Hailway

spur to the Jtonltouwadge Area end this line in expected

to poo 1--' in the vicinity of the property.

P h y R ijsfi 3 F ea tinges

The property covers an oleveted platomi

betwetm Kabbitakin and DeBdmans lakes. A very

stof.p scarp follows the shore line of KabMtskin Lake

and alonp, the south side of Kabbitskip Creek valley.

The valley of Kabbitskln Creek and the northern

row of claims is covered by a floating muskeg swamp.

Timber in the area is largely birch and

poplar but some large pine and spruce are present in

B c a 1 1 er od areas.

The la r fee elevated plateau covering about

90 percent of the property is composed of the normal

biotite hornblende granite, a medium textured pale pink

to p,rey coloured rock. No other rock types outcrop

on the property,

l l l l l l l l l l

42F84NWaa31 63.458 MANITOUWADGE LAKE

42F04NWee31 63.450 MANITOUWADGE LAKE

R. K P O R T I M 1) h X

Introduction .......................,. *. Page l

Summary and Recommendations ........... . Page l

Property ... ............................ Page l, 2

Locution and AOCOBS .................... Page 2

Topography ......,......... ....,...... .. Page 2, 3

General Geology ........................ Page 3* k

Explanution of Realstlvity Method ...... Page ^ t 6

Interpretation of Resistivity Results .. , 7

Survey Data ......,....... ..... ,.....,., Page O, 9

ii' ^ * #

PLAN NO. l ........,. Resistivity Contours,Magnetic Profiles, arid Geological Interpretation.

030

030C

(Drawing Ref. No.

-J!-

BED -TECHNICAL DEVELOPMENT COMPANY LIMITED

Mentor Exploration tt Development Co.,Ltd 100 Adelaide Street W e at TorontO| Ontario

Gentlemenj

The following report describe* the electrical

resistivity, magnetic profiling and soil sampling con

ducted over the property of Mentor Exploration 4c Develop-p t-, i' ' ' '. '. ' !p ' '

mont Company Limited located In the Manitouwadge Lake area,

Kama Creek Section* District of Thunder Bay, Port Arthur~ - -.' ? * - ' v ' - ; f . v i ''.'

Mining Division, Ontario* The survey was conducted by- ' :- /r'V~ ; | * J ''"..:"" ' , '••/'.-. -i : , ' : Oeo-Teohnioal Development Company Limited during the

period from March 2^th to April;2t|tht 19&?-"'

The results of the survey are shown on Plan

No. l accompanying this report*

summary and Recommendations

Two zones of good electrical conductivity are

outlined by the survey* These nones are apparently con

tinuations of those found on the property adjoining on

the east* Several small, narrow Bones occur at various

locations on the property but these are considered to

be unimportant*

Surface exploration is recommended on the

electrical anomalies, followed by diamond drilling where

the surface work fails to explain them* :-

Property

The property of Mentor Exploration le Development

Company Limited discussed In t his report consists of 1JT

i|0-aore unsurveyed mining claims numbered as follows i '


.T.B. lj.8398, lj.8397, 1*8396, 1*8395* 1*81*02, 1*8399* 1*8376, 48377. WOO, 1*81)01, 1*8391** 1*8381, 48380, 1*8379, 1*83781

The claims group has a common boundary with

the Sudbury Contact Mince Limited on the east, Maloney

staked group on the south, Cameron i talced group on the

north and Oreland Mines Limited on the west*

Location and Access

Access to the property is made from Camp 12

of the Marathon Paper Company Limited, which is connected

by a first-class gravel road to Stevens, Ontario, on the

Canadian National Railway. The distance south from Stevens

is approximately 30 miles* The group lies approximately

i* miles south and east of Camp 12, and a logging road from

the Camp swings to within 800 feet of the southwest corner

of the claims group. There are no roads or permanent build

ing e on the property*

TopographyThe area is fairly flat with low, rolling ridges,

which trend generally north of east* There are no large* l ' ' ' ' ' . -r. "

ponds or lakes on the group* Eric Lake lies approximately

700 feet east of the east boundary. There may be small

creeks on the claims group but these were not visible

during the winter when the survey was made* The property

la forested with a thick cover of first-growth spruce,

jaekpine and balsam with areas of birch and poplar* Alders cover the swamp areas* Undergrowth is generally light in

GEO - TECHNICAL DEVELOPMENT COMPANY LIMITED

the heavily forested areas*

Heavy enow conditions masked most of the pos

sible outoropaj only a few were visible above the snow

surface. The following f I el d notes were wade i A granite

outcrop was observed 100 feet east bf #3 Post, Claim

T.B* 148380f granite was red to grey in color, fine

grained and massive* The outcrop Showed up at the

edge of a 15 foot scarp, with a general trend of N.W,

A second outcrop of red granite was located on the south

boundary 200 feet west of Post #2, Claim T.B. 14.8381.

The remainder of the area may show outcrops after the

snow has disappeared. It is advisable to use the present

marked footage pickets where they lie, in order to tie

in the outcrops to the present .survey*

Qeneral Geology

The rooks of t he general area are pre-Cambrian

in age and all are of the igneous type* The oldest form

ation is Keewatin which consist* chiefly of metamorphosed

basio lavas, A few dikes of basic intrusives ranging

from gabbro to lamprophyre out the greenstones but are

pre-granlte in age* These older rooks are intruded by

a great batholith of granite and gneiss which covers

the greater part of the area and extends beyond Its

limits. This intrusive is identified (tentatively) as

Algoman* Quartz and feldspar porphyries are genetically

related to the granite. All the rooks are intersected

by diabase dikes, part of the Keweenawan basio intrusions.

GEO -TECHNICAL DEVELOPMENT COMPANY LIMITED

t -*-The rook formations of the area may be classified as

followst

Pleistocene 8c Recent i

Pre-Cambrian

Till -Se flu vi o-glacial deposits

Oreat Unconformity

Keweenawan:

ALOOMAN? l

Olivine diabase 6; quartz diabase dikeB

Intrusive Contact

Quartz Se, feldspar porphyry hornblende fe biotite granite b gneiss

KEEWATINl

Intrusive Oontaot

Basalt* andesite*, amygdaloidal A pillow lavas, amphibolite, aplite, peridotlte., chlorite 8c hornblende schist, subordinate areas of intrusive gabbro A lamprophyre.

The Keewatin rocks are chiefly basic volcanics

or other metamorphosed equivalents* Whenever massive lavas

ar© found they arc andesitic to basaltic in composition and

In occasional places show pillow or ellipsoidal structure.

They are generally altered to chlorite and hornblende

schists. Hear granite contacts these sohipts are greatly

sheared and contorted. It le In one of these .small ureas

of greenstone* at Its contact with granite, that the Oeoo

Mines Limited orebodles occur. These greenstone bands

show faulting in a north-south direction* A north-south

fault offsets the Ooco orebody* (See Ontario Department

of Mines Vol. XL1, Part VI, 1932* Geology of Huron Bay,

White Lake Area, by Jas. K* Thompson.)


-s- -. ; ;,.;: ; -gxplanutIon of ReeletlvltyMethod

#he method used by the Qeo-Technical Develop** ' . " . ' - - ' '

ment Company Limited is a f omi of the early real st Ivlty

methods modified by some eight yeara 1 experience in the

fioid.

In short* a known current is put into the

ground and readings are taken a t 50 foot Intervale along

picket linee by aenaitive vacuum tube voltmeters measur

ing the voltage drop across this interval* Calculations* ' '' "' L' s*1 ' ' "- ' - ' ' - ' "

translate theae voltage readings into resistance values

in terms of ohm-centime ter a* f he ae are plotted on the

map accompanying this report, ,/ ;

Due to the inhomogeneity of the medium being

examined} I.e., the complexity of the geology and structure,

interpretations are baaed on experience and a knowledge of

the geological oondltiona In the area being tested with

this particular method. Where the latter ara unknown i

the Interpretation musti of necessity, be limited or very

tentative*However* without any geologioal information it

is generally possible to differentiate between banded rooks

such aa volcanics, sediments ar gneiss and large bodies of1 ;.i ,'' '..- v ' ' ' •; 1 ' ' '''.i'-

massive intrusives, due to the difference of electrical

conductivity between the various flows or be da. strike

trends, loldlngt *to, are therefore readily ploked lip*

In some cis e o rook contact a may be Inferred.

BED-TECHNICAL D\ v ELOPMEMT COMPANY LIMITED

. 6 ~ ' . . ,; -\' ••••- ; , . .;..: ;:,.-.' :shear or fracture conea are relatively better

conductora, due to their higher water content* Where

extreme low realatlvity values are found, graphite or

sulphides are indicated, Graphite le found In schist

or shear zones or sedimentary horizons, which a re shown

by eleotrioal methods as, generally* narrow low linear

trends. Unfortunatelyi from the point of view of inter*

pretatlon, sulphides may be present with the graphite

or may occur In shear sones giving Similar low linear*.

Interpretation of Resistivity Insults

Only two Bones, designated as HA-1" and "D-l"

are thought to be of sufficient strength to warrant further

investigation* These two zones of good conductivity are

continuations of eones which appeared to the east of the

claims group* They occur in Olalms T,B* ^8381^ jj.81j.01

and J4.8J80*

The overall electrical picture suggests a aeries

of gneiss or bedded rooks atriking generally N* 700 E*

Since gneissic rocks were observed on the property to the

east, it is inferred that the rooka underlying this claims

group are of the same type aa the electrical resistivity picture is similar. ; ' ' .-.'..•.'.•' - ^ . ' : : '"'•••- ^'"'--r^'1

The two aones are described as followsi

"A-l" zone* a ahort 500 foot pod-shaped con

ductor with a general atrike of N. 700 S* appeara ia

of a gently curving eleotrioal resistivity trend

extends s. 70O w. across the southern part of

GEO - TECHNI C A L O E V E L O P M E N T C O M P A N Y LIMITED

- 7 - . -' ' :" -, ; -:, ;S - . , ' ' ' .. -:- V :^ ;V.";f- ; group. The eastern part of "A-1" Bone shows a magnetic

high over the center of the cone at L 12W. There is

only a slight magnetic anomaly over the western end of

"A-l". In the four magnetic profile* run across this

sone, the highs fell to one aide or the other of the eone,

The magnetic anomalies here may b* ascribed to the pres

ence of magnetite included in the gneissic rooks of the area* ' ; :. ; ; -~ v , ^ V' ' - -

"D-l" zone of goodconductivity rnserables fiA~l*

in eize and strike. It is thought to be a continuation

of the Eone which extends N. 70? 8* into the property

to the east* The magnotlc prof lied ov*r this zone showed

a slight anomaly over the eastern part at L SOW,, and a

magnetic low over the west end at L 2lfW, The magnetic' ' ' ' ' , ' ' . ; " "' ''f- ''. .' ./.' ' ' ".' .' '. ' . "

'•' ' ', " ' - ,' ' .' f . ' ' .

highs occurred at the sides or contacts of th* zone.

The remainder of the property shows the flame

electrical resistivity picture as the southern part]

a general S. 700 w. trend which appears to denote only

the general trend of the underlying rook formation**

In conolusion* cone "A-l" appears to be similar

to and part of Bone "A" on the property to the east.

Surface exploration is recommended, t o b e followed by

diamond drilling if is deemed necessary, "D-l" none

deserves the same amount of attention; i.e., diamond

drilling to depend on and follow surface exploration.

Soil sampling of these zones is in progress

and the results could influence future work to a great extent* ' ' - ' " ' : ''\ '. ' ;:: '' ' .

B C. O - TECHNICAL DEVELOPMENT C O M P A N Y LIMITED

The entire claims group warrant* a

program of surface exploration} i*a,, geological map*

ping and general prospecting,w 1th initial offorts con

centrated over the *.ones outlined by the resistivity

survey.

Survey Pat*

An electrical resistivity survey and geo

magnetic profiling was conducted over the property of

Mentor Exploration i; Development Company Limited located

in the Manitouwadge Lake are*, Nama Creek Section, District

of Thunder Bay, Port Arthur Mining Division, Ontario*

The surveys were conducted by the Qeo-Teohnlcal

Development Company Limited during the period f**0# Mteroli

fi5th to April 2J).th, 195^i and the results are shown on

yian No, l accompanying this report.

A base line was established on the property

in an east-west direction. North-south traverse linea

were turned off from this base line at lj.00 foot intervals

and run to the north and south boundaries of the claims

group. The electrical resistivity readings were tfeken

at #0 foot intervals along the picket linos. These

readings are shown on Plan No, l plotted on the east

side of the north-south picket linos, and are plotted

In ohm-centimeterB x 10^.

The magnetic readings were taken at 100 foot

intervals, over and on both sides of the Bones of good

conductivity outlined by the resistivity survey* They

BED - TEC H N l C A L DE V E L O P M E ,N T COMPANY LIMITED

- 9 - '-' .- - ' . " ; •:'-'--"- -:: :' " ;- ; .--.; •.-.•;'..- •••::-'-.-. : .: ; -.v'/

are plotted on Plan No. l on the weat aide of the

traverse linesi expressed In gamraaa and shown by

profile lines.

A total distance of 12*78 miles were surveyed

by the electrical rasistivity method* which required

13^0 readings* A distance of 3,.9l| nilea of line were. , *. . ' ''. i" 1 \ .

covered by the magnetic survey i which required 208

readings.

The number of eight-hour man-days required

to complete this work is as followsi

7

Line cutting and chaining

Laying spread wire

Operating Resistivity Survey

Operating Magnetic Survey

Calculation fc Interpretation

Drafting

Office Typing 4; Supervision

TOTALS

(8-hour) Attributable to Man Payj Assessment Work

60 x kMi*

2 X k . '

M' l*

4

120

32

M

Respectfully ; submitted, OEO-TBCHMIOAL PEVE]W)PMEM!P M?J)*

JS* P. Sheppard Geologist

May 3, 1951f Toronto, Ontario

BED - TECHNICAL DEVELOPMENT COM PA M V LIMITED

SOIL SAMPLE DATA jtf MENTOR EXPLQRATIQH Se DEVELOPMENT CO, LTD.* Mama Greek, Manitfcaw&Age Lake area* Ontario*

made by teating with colorimetric Method using ithizone") -

Field Samples secured April 8-23t 1954* Ae say Report dated May 7* 1954

Sample No,

A 36 A 37 A 38 A 39A 40A 41 A 42

A ^6 A 47 A 48 A 49 A 50

ISli

Lab. Ho.

Parts per millionCopper Lead

2010102010

OOOOOOOO

10O

10 2015

o o

40 o1015

o o

2020o

10lo

o5o4o

105

20 O

10 O

30

Zlno

30607510

57025506520

3510,

110?S 15aS25o172015

O 12152045*515

10175510

Line Ho,0W

wH

W

H

20W

400 *s.-756't iioo*s

S7QP8

loom

fO'S o's100018 12001© 1406*8


42F04NW003I 63.450 MANITOUWADGE LAKE

42Fe4NWa031 63.450 MANITOUWADGE LAKE

040

040C

R E PORT I N D E X

Introduction .........................Page X

Summary and Recommendations .......... Page l

Property, Location and Access ........ Page l, 2

Topography ..............*...........* Page 2

General Geology ....................,. Page 3*4

Explanation of Resistivity Method .... Page i|., f?

Interpretation of Resistivity Results..Page 5, 6

Survey Data .... v. ,*,...., .w ......, .* Page 7, 8

PLAN NO. l Contours and Geological Interpretation.

(Drawing Ref* No. 23-5-^)


MeWoor Exploration 8c Development Co. Ltd., -100 Adelaide Street West, Suite 1010, ;Toronto 2, Ontario .

Gentlemen: .

The following report describes the electrical

resistivity survey conducted over 28 mining claims held :

by Mentor Exploration 6c Development Company Limited,

located in the Manitouwadge Lake area, Rabbitskin Lake,

District of Thunder Bay, Port Arthur Mining Division,

Ontario. v ; ' ,:

The survey was conducted by Geo-Technical

Development Company Limited during the period from March

8th to April 13th, 19#|* The results of the survey are

shown on Plan No. l accompanying*this repprt,

Summary and Recommendations^

One zone of good electrical conductivity is

shown by the electrical resistivity survey. This zone

Is inferred to be a shear or fracture zone, with a general

strike of N Lj-5 oE. ' :

Geological mapping and surface prospecting is

recommended on the claims group* Diamond drilling on "A"

zone should be dependent on the results of the surface ;

investigation. ;

Property, Locatibn and Accessibility ; ,. ;

The property of Mentor Exploration # Development

Company Limited discussed in.this report consistsof twenty-

eight [|0-acre unsurveyed mining claims .numbered as follows:-


- 2 - . . ' .

T.B. Li.9015/16/17/18/19/20/21/22/23/27/28/29/30/31*

11.901+5/6/7/8. 1^90511/5/6, ^9062/3/1^/7/8/9/70. : ^

The property adjoins that of Coulee Lead Se Zinc Ltd

on the east, Laoo Mines on the south, Conwest Exploration

Company on the west, Barymin Company on the north.

Access to the property is made from Geraldton,

Ontario, by small plane to Rabbitskin Lake, which lies on

the west boundary of the claims group. The distance bjr

air from Geraldton is approximately 65 miles. Helicopters

based at Camp 12, 30 miles south of Stevens on the C.N,R.,

make the most economical route to and from the property.

There are no roads or permanent buildings on the property.

The claims lie approximately 3t" miles north from Geco Mines

Limited, Manitouwadge Lake.

Topography ,

The area is rugged, with cliff faces rising td

over 100 feet above the surface of Rabbitskin Lake. The

north part of the property is fairly levelj the remaining

portion contains high ridges broken by numerous gulleys.

The area is forested with a thick cover of first-growth

spruce, jackpine, birch and poplar. Undergrowth is generally

light in the heavily forested areas, and outcrops are numer

ous. Heavy snow conditions hampered geological investigation

at the time the survey was being made. It is advisable to

use the present marked chainage pickets where they lie in

order to tie in the outcrops to the present survey.


-3 . . -; , .-' . - ,: - -'

General Geology

The rocks of the general area are Precambrian

in age and all are of the igneous type. The oldest forma

tion is Keewatin which consists chiefly' of metamorphosed

basic lavas. A few dikes of basic Intrusives ranging from

gabbro to lamprophyre cut the "greenstones" but are pre-

granite in age. These older rooks are intruded by a great

batholith of granite and gneiss which covers the greater

part of the area and extends beyond its limits. This

intrusive is identified tentatively as Algoman. Quartz

and feldspar porphyries are genetically related to t he

granite. All the rocks are intersected by diabase dikes,

part of the Keweenawan basic intrusions. The rock forma

tions of the area may be classified as follows:

Pleistocene ft Recent Till Se fluvlo-glaolal deposits

Great UnconformityPre—Cambrian

Keweenawan

Algomanj

Olivine diabase 3c quartz diabase dikes

INTRUSIVE CONTACT

Quartz 8e .{feldspar porphyry(Hornblende -8c biotite granite # gneiss

INTRUSIVE CONTACT

Keewatin: Basalt, andesite s j- amygdaloidal 8c pillow lavas, amphibolite, aplite, peridotite, chlorite fc hornblende schist, subordinate areas of intrusive gabbro Se, lamprophyre*

BED - TECHNICAL DEVELOPMENT COMPANY LIMITED

The Keewatin rocks are chiefly "basic volcanics V

or other metamorphosed equivalents. Whenever massive lavas

are found they are andesitic to basaltic in composition and

in occasional places show pillow or ellipsoidal structure.

They are generally altered to chlorite and,hornblende schists*1 'f : '" ' : -'- '' ' . '"' ' v ' '

Near granite contacts these schists are greatly sheared and

contorted. It is in one of these small areas of greenstone,

at its contact with granite, that the Geco Mines Ltd ore-

bodies occur. These greenstone bajids shjciw faulting In a

north-south direction. A north-south fault offsets the

Geco Mines orebody. (See Ontario Department of Mines Vol.

XLI, Part VI, 1932, Geology of Huron Bay, White Lake Area,

by Jas. E. Thompson.) V

Explanation of Resistlvity ..Method

The method used by Geo-Technicai Development

Company Limited is a form of the earlier resistivity methods

modified by some eight years' experience in the field.

In short, a known current is put into .the ground

and readings are taken at |?0 foot intervals along the picket

lines by sensitive vacuum tube voltmeters measuring the

voltage drop across this interval. Calculations translate

these voltage readings into resistance values in terms of

ohm-centimeters. These are plotted oni the msip accompany

ing this report.

Due to the inhomogeneity of the medium being

examined, i.e., the complexity of the geology and structure,

interpretations are based on experience and a/knowledge of

O E O - T E C H N l C A U DEVELOPMENT C O M P A N Y L ( M l T ED

the geological conditions in the area being tested with this

particular method. Where the latter are unknown ; the inter

pretation must, of necessity, be limited or very tentative.

However, without any geological information it is

generally possible to differentiate between banded rocks

such as volcanics, sediments or gneiss and large bodies of

massive intrusives, due to the difference of electrical

conductivity between the various flows or beds. Strike

trends, folding, etc., are therefore readily picked up,. In

some cases, rock contacts may be inferred.'

Shear or fracture zones are relatively better

conductors due to their higher water content. Where extreme

low resistivity values are found, graphite or sulphides are

indicated. Graphite is found in schist or shear zones or

sedimentary horizons, which are shown by electrical methods

as, generally, narrow low linear trends. Unfortunately,

from the point of view of interpretation, sulphides may be -

present with the graphite or may occur in shear zones

giving similar low linears.

Interpretation of Heslstivity Results '

Only one zone, designated as the "A" anomaly on

the plan accompanying this report, is thought to be .of

sufficient intensity to warrant further investigation, This

zone has a minima of 70,000 ohm-centimeters and can at .best,

according to our interpretation, j be regarded as disseminated

sulphides, . ;/


-6-

The "A" anomaly runs across claim T.B. 1|.9029 and

dies out on claim T.B, i|.9070. The zone strikes Nl^E, has r

an overall length of approximately 1600 feet and a geophysicaily

indicated width of less than 100 feet. It lies to the north '

of a northeast trending scarp face, and is inferred to be a

shear or fracture zone. The scarp face may be the expression

of this inferred shear zone.

Two small anomalies occur on claim T.D. lj.9022* These

are in a swamp area and lie close to a small pond. Insofar as

the intensity of these zones is slightly under 100,000 ohm- ;

centimeters, they cannot be considered to be of primary

importance. They may represent par filially digested ienoliths

within the granite intrusion. These anomalies cover a small

area and are not considered to be "of^ economic, significance,1 "i ' .- ?- -' /' ' ,'' - T"' ' ," - ' . '' - , ' - 1

There is strong evidence'from geophysical results

and aerial photographs that a fault which trends slightly

east of north ends at the "contact" in which zone "A"

occurs. There is no direct evidence to suggest an extension

of this fault in a southerly direction.

It is recommended that the northeast' .'blairns*

(i.e., T.B. lj.9029i lj-9030, lj-9070, 1^9028, 1+9069) be given a ;

thorough surface examination. The remainder of the group

should be prospected although the resistivity survey results J,

give little encouragement for the area. ,

If the above program does not supply an explanation

for the "A" anomaly, then one diamond drill hole across the

zone would be warranted.

BED - TECHNICAL DEVELOPMENT COMPANY L l MITE P

- 7 - . ' : : .^ : ; :; -':'- - ;,..-Survey Data

An electrical resistivity survey was conducted

over the property of Mentor Exploration tt, Development

Company Limited located in the Manitouwadge Lake area,

Rabbitskin Lake, District of Thunder Bay, Port Arthur

Mining Division, Ontario. The survey was conducted by ^

Geo-Technical Development Company Limited during .the

period from March 8th to April 13th, 195^4-* and the results

are shown on Plan No. l accompanying this report.

An east-west base line was established on the

property; north-south traverse lines were turned off at

lj.OO foot intervals. East-west tie lines were cut in the

north and south ends of the property and utilized to tie

in the ends of the north-south picket lines. Electrical

resistivity readings were takeri ; at 50 foot intervals

along the picket lines. These readings are shown on Plan

No. l, plotted on the east side of i;h,e lines and expressed

in ohm-centimeters x 10^.

A total of 19.95 miles of line were surveyed

by the electrical resistivity method which required 2105

station readings.


-3-•" f -

8eology ras mapped using

h8e

. Retails Of

Prospecting and Stripping M.C. Hubblft K Leo

Hubble Deoharnnls 20

Geological Mapping P. A. Chubb

.Maps and ReportsP .A . Chubb

20x4• ;-^8;Ox4:.\Y; :V

''* ''" -'-' !" :./' ' l " - r,

' : ' ; "7x4 ' : ^' :;;. ;;'. *' c '.''.' ;r ;-- ; -.-" .' :^t

; '\; 3x4,' v"\-l-,"''

shifts credit

This wortls being aPPH9a ^ 7 ^ fl,y8

for each of the following 38 claims,

?B:S?:!^:^---aa.3a-a3:;::;,TB 49045-46-47-48TB 49054-55-56 'TB 49062-63-64TB 49067-68-69-7Q

- :' .' - ' ' f. ' '

P.A, Chubb, P*Engr

- 8 -

The number of eight-hour man-days required to

complete this work is as follows: ,

(8-hour) Attributable to Man Days Assessment Work

Line cutting Se chaining

Laying spread wire

Operating Resistivity Survey

Calculation 8c Interpretation

Drafting

Office Typing 8c Supervision

TOTALS

lij.7 x Ij.

8 x ir66 x k

3 x 1^,

llj. x li'/''

8 x k

588^.32'-^:---.:'^

•••'•••*^--.-s56 M^32 ^ 1

Respectfully submitted,

GEO -TECHNICAL DBVELOPMENT C OHI*ANY LTD.

E.P*Sheppard Geologist

May 26, Toronto, Ontario


48396

4839748398

SWAMP

4839548402

BASE

48376

4839948394

48401

48400

48377

48381

TIL-L

48380

48379

SWAM

48378

G EO LOGY

MENTOR EXPLORATION a DEVELOPMENT CO. LTDGRANITE

6NEISS (ALTERED SEDIMENT

AREA,MANITOUWADGE ONT.RESISTIVITY ANOMALY

SWAMP, ALDER SPRUCE.

GLACIAL TILL, BIRCH POPLARSCALE l - 200'

LOCATION MAP l 1 s l MILE

42Fa4NW0031 63.450 MANITOUWADGE LAKE aoo

48402

iaL l N E

48400

f W* .-•if ̂

48377

48381

48380

48379

LEGEND

LINES CUT AND CHAINED. RESISTIVITY READINCS OBSERVED

RESISTIVITY CONTOUR

MAGNETIC READJHGS PLOTTED ON WESTS I DE OF Lt N E GRID AND MAGNETIC PROFILES PLOTTED TO SCALE! l - 1000

PACIFIC (EAST J COLDELECTRIC RESISTIVITY ANOMALY

PROPOSED DRILL HOLE

OUTLINE OF HIGH GROUND

LOCATION AND NUMBER OF SOIL SPECIMEN SAMPLES

LOCATION OF SOIL SAMPLE ^ANALYSIS INDICATES

CLAIM BOUNDARY AND CLAIM POST LOCATION LOCATION MAPSCALE ' l - l MILE

ELECTRICAL RESISTIVITY SURVEY OVER PROPERTY OF

MENTOR EXPLORATION DEVELOPMENT CO. LTD.RESISTIVITY CONTOURS AND GEOLOGICAL INTERPRETATION

AND IN PART MAGNETIC PROFILES

MANfTOUWApGE LAKE AREA

NAMA CREEK SECTION

DISTRICT OF THUNDER-BAY

PORT ARTHUR MiNtNG DIVISION

ONTARIO

GEO-TECHNICALPLAN-NO, l.

63.458 MANITOUWADGE LAKE

GEOPHYSICAL SURVEY BY!

DEVELOPMENT COMPANY LIMITEDMARCH -1954

SCALE: l '- 200

r

L E G E N D

GRANITE

GNEISS

RESISTIVITY ANOMALY

SWAMP,

GLACIAL TILL,

LOCATION MA P l"* l Ml LE63.450 MANITOUWADGE LAKE

G EOLOGY

MENTOR EXPLORATION 8 DEVELOPMENT CO. LTD.

MANITOUWADGE AREA, ONT.

SOALE

LEGEND

l O OHM - LM x 10

20

50

100

200

50

00

200

UP

LINES (-UT AND CHAINED, RESISTIVITY READINGS OBSERVED

RESISTIVITV CONTOUR

ELECTRICAL RESISTIVITY ANOMALY

FAULT ZONE INFERRED FROM GEOPHYSICAL SURVEY

SHEAR OR FRACTURE ZONE INFERRED FROM GEOPHYSICAL SURVEY

'- ^ OUTLINE OF HIGH GROUND

o-e. OUTCROP

CLIFF

CLAIM BOUNDARY AND CLAIM POST LOCATION

LOCATION MAP

ELECTRICAL RESISTIVITY SURVEY OVER RABBITSKIN LAKE PROPERTY OF

M E N TO R EX PLORAT ION DEVELOPMENT CO. LTD.RESISTIVITY CONTOURS AND GEOLOGICAL INTERPRETATION

MANITOUWADGE LAKE AREA

DISTRICT OF THUNDER BAY

PORT ARTHUR MINING DIVISION

ONTARIO

GEOPHYSICAL SURVEY BY:

GEO-TECHNICAL DEVELOPMENT COMPANY LIMITEDPLAN NO- l APRIL-1954

SCALE: i" - 200'12OO ISO loo' g*1 looo'

23 -5 - 54

42F84NWeiB31 63.45* MANITOUWADGE LAKE 230

i '' ' ' ' , ' ' . ' . mentor bxp3oration.-ft development

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