42H13NE8002 63.8095 PINARD 010

KEEVIL MINING GROW LTD.

PROJECT/PATHFINDER - 014l

CLAIMS PH6232 to PB6237, P06461 to P064G4,

PINARD TOWNSHIP, OWTARIO.

R WORT Ois THE GE PHYSICAL S"RVEVS

REPORT rtc. HK5P rt.T.S. 4211/13

February 1st, 1967.

5 H. D. MCLEOD *

SIWMAKY, CONCUR TONS G KKCOMMMDATKWS:

Keevil Mining Group Limited Project Pathfinder claims group #11

was explored by ground magnetometer and electromagnetic surveys in February

and March 1966. One large strong conductor, part of a second conductor and

several magnetic anomalies were located. Neither conductor has magnetic

correlation.

Little is known about the geology of the claims except that

outcrops of granite gneiss and gabbro are present. The magnetic anomalies

are interpreted to be magnetite - rich phases of the latter and the conductors

arc interpreted to be caused by graphite or graphite-sulphide horizons in

the gneisses.

Geological mapping and prospecting of the claims is

recommended.

ACCOMPANYING MAPS:

1.

2.

Dwg. 3006

Dwg. 3007

"Magnetometer Survey" 0

"Vertical Loop E.M. Survey",

1.

INTRODUCTION

Keevil Mining Croup Ltd. Project Pathfinder claims group

No. 11 comprises 12 contiguous claims numbered P86233 to P06230 inclusive

and P064f)9 to PB6464 inclusive in Pinard Township. Nine claims of the group

P06233 to P06237 inclusive PH6461 to P06462 and PB6464 are described in this

report. The claims were staked and recorded in February 1965 and presently

are registered in the name of Keevil Mining Group Limited, Suite ]000,

11 Adelaide Street West, Toronto, Ontario.

The claims were explored by a combined magnetometer and

electromagnetic survey during the period February 10th to March 26th, 1966.

The work was done by Geophysical Engineering and Surveys Limited personnel

under the direct supervision nf the writer. The magnetometer survey was done

by J. M. Janveau, Schumacher, Ontario, the electromagnetic survey by

J. D. Martin, North Bay, Ontario.

LOCATION G ACCF.SS

The claims are located in the north central part of Pinard

Township, Porcupine Mining division, a distance of three miles to the north

of Fraserdale, Ontario, or sixty-five miles northwest of Cochrane, Ontario.

Approximately co-ordinates are 490 56' north Ol 0 34' west. '

Access to tlie claims, in summer, is by canoe down the Abitibi

River from Fraserdale and, in winter, is by skidoo or a three to four mile

trail from Fraserdale.

SURVEY MF.TI10DS

Line Cutting:-

Lines were cut in both directions at 400-foot intervals from

a base line oriented N 70^ E. The lines are all 1200 feet long. Approximately

2.

seven miles of line were cut within the claims described in this report.

Magneto met c r Survey: -

The magnetometer survey was done with a Sharpe Fluxgate

Model M.F. l magnetometer having a sensitivity of 20 gammas per scale division.

The field procedure used during the survey is described in Appendix "A",

Approximately 37f) readings were taken.

EJecjJL9magjie t jk^ j±urv ej;: -

The electromagnetic survey was done with a Sharpe S.E. 200

V.E.M. unit fitted with an amplifier and special batteries in order to increase

the range of f-00 feet. The field procedure used during this survey is

described in Appendix "B". Approximately 490 readings were taken. "

KKSHLTS OF SIIKVEYS

Magnetometer:-

The magnetic relief on the claims is generally quite low, however

several narrow linear N 700 E trending anomalies were located. The highest

magnetic anomalies occur at two localities. One is a one line reading of

2000 gammas above background in the southwest corner of claim P064C2 and the

second is a short linear anomaly up to f)400 gammas above background in the

north part of claim PP.6237. Several other weak N 70^ E and N 20p W trends

are present.

E l c c tromagnctic: -

The electromagnetic survey outlined one conductor and indicates

the possibility of a second. The conductor was traced for a distance of 5000 feet

on the claims and may extend beyond the area in both directions although it is

very weak at each boundary. Throughout most of its length the anomaly exhibits

moderate to strong conductivity although the profiles are broad considering

that the overburden is shallow in the area. The section between lines 40 E and

3.

64 C has the strongest conductivity and probably would show up better had the

linos been heller oriented.

The second conductor was traced for a distance of 000 feet in

the north part of claim 1*06461 and may extenri to the west. This anomaly has

riood conductivity m one line but was not detailed further as it migrates out

of the gr 5d.

Neither conductor has any direct magnetic correlation, in

fact the two types of anomalies tend to cross-cut each other at a low angle.

GENERAL GEOLOGY

Outcrop is known to exist on the claims but it could not be

mapped due to lew relief and deep snow at the time the work was done. Specimens

from some outcrops indicate that the claims are underlain by granite gneisses

intruded by gabbro dikes.

The magnetic anomalies trending N 700 E are probably caused by

magnetite in the gabbro dikes. Since these cross-cut the trend of the E.M.

conductor they are not believed to represent magnetite - rich ?,ones in the

gneisses. The weak N 2^c W trending anomalies probably represent diabase dikes.

The E.M. conductor appears to be formational and thus probably

is a graphite or graphite-sulphide horizon in the gneisses. The strike of

formations thus is approximately east-west. Dip is uncertain, however probably

is to the north.

FIELD PROCEDURE FOR A MAGNETOMETER SURVEY

The magnetometer deflection depends on the total vertical intensity and. J s made up of(a) A l^rge part which does not vary with time or position on the property.(b) A small part which varies with tine, called the diurnal variation.(c) A part which varies over the property, called the anomaly value.

It is necessary to eliminate (a) and (b) and to measure (c). The first may be eliminated by substracti ng a constant value from al] the final calculated values in the survey.

The second may be eliminated by measuring diurnal changes and substractinr t her. from the results at each station. The residual after these corrections a.re made is known as the anomaly value.

SETTING J! P,. .HA.SK. ST A T l O NS

To obtain a graph showim; the variation of the magnetic field during a df,y it is necessary to establish a series of stations over the pro[ erty whose- value is known. These base stations should be so placed that one or another may be conveniently read at least every hour. The base line across a property J s useful for a line of such stations, as are tie lines which are riot more then one naif mile troni the oase line.

To set out the base stations the following procedure is suggested.

1. Read base A, than B, then C, then D and return to A.2. Read bate D,E,F,(l and return to 1).3. Continue until all base stations are covered.4. Tabulate the results as .in the oxan.jle below -

STATION TIM;; EliAi:!:^ DI'Jl iJAL CORRECTEDGAMMAS CORRECTION BASE VALUE

Base A 9.00 1190 O 1190

Base B 9.10 1060 1/4 X 35 r 9 1051

Base C 9.20 8?g 2/4 X 35 r 18 810

Base D 9.30 1245 2? 1228

Base A 9.40 1225 35 1190

Note that base A has increased from j.190 to 1225 in 40 minutes. To bring the value back to 1190 one must subtract 35 gammas. The assumption i.s made that the increase has been regular hence Base B must have .1/4 X 35 substracted arid so on. A continuation of the calculation is carried out for all base stations.

App. 2

OBTAINING AND CALCULATING ̂FIKU) .RESULTS

i ce of Stat i on Interval

The distance between stations j a determined by the width of the bodies v;h.i.ch it j s required to detect and by the depth of overburden. The normal station interval will usually bo dictated by the field super visor or by the head office but the operator is responsible for out lining the shape of anomalies by taking intermediate stations and fer gcnera.ll y ad justing normal procedure to suit local conditions.

1. Read a base station.2. Read fjeld stations for approximately one hour.3 . K e a d t h e came c j i' another b a s e station.4 . Record the Results as in the following table.

STATION TIME READINGGAMMAS

Base A

1

?

3

IB

19

20

Base B

8 00

B 03

M 06

S 09O r r 'o p ;

9 00

9 03

9 06

1124

1347

615

-522

1207

1246

1257

1 040

DIURNALCORRECT:

/66

/60

/l 5

CORK. VALUE

1190

1410

675

-1380

1225

1261

1270

1051

ANOMALY VALUE

190

410

-375

-2380

225

261

270

51

Koto the diurnal added is sufficient to bring the corrected value of the base stations to those established previously. Ti:e diurnal has decreased from 66 at ?.00 o'clock to 1] at c'.06, a change of 55 during 2.1 equal time Intervals. Thus station l will be increased by 66 minus 1/21 X 55 which is approximately 63- Station 20 will be increased by 66 minus 20/21 X 55 which is 13 approximately.

After several days work have been done an inspection of the corrected values v;il l indicate the proper constant value to substract to reduce the majority of the values to as low a numerical value as possible For the purpose of illustration it has been assumed that the constant val UP i-s lOO'O.6. he anomaly value is next plotted on a map of the property, and contours drawn and lnter:.rotation made.

Tho equipment consists of two light coils, one receiver with clinometer used in conjunction with amplifier and earphones and one transmitter w.lth battery pack.

V.'hen taking; readings tho plane of the transmitting coil is vertical and tho plane of tho receiving coil is horizontal. It is important that the transmitter coil is oriented so that the long axis is pointinr at the receiver coil. V.'hen no conductor is present the receiver coil should null close to zero degrees (i.e. horizontal), cither- side of a conductor dip angles greater than two degrees will bo measured. When recording, dip angles the dip is designated either' north or south with N-S picket lines tind east or west with E-VJ picket lines. The degree, of dip angle; depends on the size of the conductor, the length, the dej th anri the type of traverse being used, {see survey procedure) It should be notea tnat the farther the coils ar^ apart the greater the depth penetration of the signal. Because tne signal strength decreases rapidly with 3 inited to 500 or1 60-0 ft.

distance from the coil, the separation botueen coils is

Survcv Procedure

1'wo types of travcrc.es are used, the parallel line jaethoci foronery transmitter setup for detaill nf, the

conduct c: r.reconnaissance, find the stat

Kor the parallel line, traverse the transmitter and receiver move together on two adjacent lines usually 400 ft. opart. Readings are taken every 100 ft. After the whole, property has been covered in this way, the transmitter is setup on a crossover (see discussion below), ana the receiver oierotor roads lines on eitner side of the transmitter with 50 ft. 'station interval. The transmitter is then sot up on newly esta blished crossover point {if any) arid the receiver operator continues readings on the next line. This procedure continues until no crossovers are obtained.

It is important that all crossovers found by the parallel line method be detailed. Thcit is if a parallel line crossover is on say line 12 V.'. and usin/-; this f c.r trans, setup, detail on line 8 W. produces a crossover then trie transmitter should be setup on line 8 W., and -line 12 W. yhould be reread so as to establish the exact position of .trie crossover.

What is a Crossover?

A crossover is the station where the dip an( r,le is /oro decrees and the dip angles on either side of this point are such that imaginary axes perpendicular to the plane of the coil tilts will dip towards the position of f,oro decrees null.

- 2 -

* When obtaining; a null it will bf: found that a perfect null will be obtainable. That is the lowest obtainable sound of the signal

will be the same for several decrees of the dip of the coil. This is the null, width and should be recorded. The dip is the average of this null width. The results are recorded as in table I.

3[e.rt.ica.l..Lpo] ,. J^lj^Avl:T.ow'ijine.tA.c. Surrey

Station Null Dip WidthTransmitter on L4E, Receiver L6E

0/00

IS

23

3S

etc.

2N

L'A

2 ON

2S

2S

IS

16N

6S

0

3N

IfiN

4S

Parallel lineor

broadside method

Transmitter on LBE at 2/90S, Receiver L4E

0/00 6N O 3N

0/50S 15N ION 13N Detail method

l/DOS 35N ?5N 3ON

1/50S 40N 34N 37N

l,,S,..F:'**tf*i**" Vs-

PORCUPINE MINING i DIVISION

l ' *i . ^ l V^

PARU/wtto

^ *., M'-. \ i; ( b,i-

X\

-Hl* v

:?A~"

V ^7

J L, ^(T.^r.

7f

\8

'1

y DATE OF iSSuH

ONTARIO DEPT. OF MINES

D;0-r*:

fi

Exploratory Licence of Occupation 13,761

File 171727

^

8

ight* Retervot fr

-*r^-.v

-.a**r ^.

(t

7

5 SZ Z

xUJ

?

i

l

*

'Si'

1

r

42H13NE0002 63.2095 PINARD

200

f * l ^

f 2 -

fi O

O A

y

CO

S

L E

GE

MD

.

A/

MA

GN

ET

OM

ET

ER

S

UR

VE

Y

-6 so

s fr

o w

r?

FO

R

KE

EV

IL

MIN

ING

G

RO

UP

LT

D

PATH

FIND

ER-7

10.

42H13NE0002 63.2095 PINARD

210

AN

OM

ALY

11

- P

INA

RD

TW

R

200

40

060

0

- 7/0

DW

G.3

O86

J.

At

k

VE

RT

ICA

L

LO

OP

E

M

SU

RV

EY

FO

tf

KE

EV

IL

MIN

ING

'GR

OU

P

LTD

.O

N"

PR

OJE

CT

P

AT

HF

IND

ER

-710.

OF

42H13NE0002 63.2S95 PINARD

22

0

AN

UM

ALY

li

- P

INA

RD

T

WR

20

0

S ;n

c*

^

2O

O

400

60

0

Z. E

G E

N D

.

o o O NL

JA

W- 7/O

DW

G. 3087

f

0

-f//

?

de f a

// f r

avers

e

re f-

V/t

far

defc

ti

pro

fi'/e f

or

of

Sov f 6

I

Sh

arp

e

Sf

' ZO

O