42A12SEa286 63.1041 ROBB

REPORT OH THE GL^,.———.- __,....

OF

GROUP 5, KAMISKOTIA LAKE,

ROBB TOWNSHIP, ONTARIO

FOR

KIRO EXPLORATIONS LIMITED

Summary

The magnetic survey mapped four dlabaae dykea,

two anomalous magnetic eonea, A and B and three faulta.

Two aeta of conductors were outlined lo the electromagnetic

aurvey. One aet parallels the diabaae dykea and t second

more important aet parallels the Keewatin volcanica.

It la recommended that a attady be Mde of the

geological conditiona at the Kam Kotia Mine with the hope

of placing a more complete evaluation on the results of

the aurvey of the lake area. Following thia, a better

choice could be made in laying out a drilling progrataa*

to teat the anomalies.

REPORT ON THE GEOPHYSICAL SURVEYS

OP

GROUP 5, KAMISKOTIA LAKE,

ROBB TOWNSHIP, ONTARIO

FOR

KIRO EXPLORATIONS LIMITED

1. Introduction

Five claim groups war* acquired in Robb Township,

Ontario by Kiro Explorations Limited. Three of these

groups were covered with magnetic and electromagnetic

surveys during the summer of 1959 while a fourth group

was mapped geologically during the same period. The

survey of the fifth group* comprised mainly of water claims in

Kamiskotia Lake, was left for the winter months*

TT General Geology

The main rocks of the area are a series of

Keewatin-type northwest striking lavaa. Into these rocks

are intruded first Haileyburian gabbros, Algoman granites

and finally two ages of diabase dykes. The younger of

these two series of dykes, the Keweenawan, are the most

predominant in Robb Township and they atrike generally

north - south.

- 2 -

The copper mineralisation at the Kam Kotla Mine

is described as a massive replacement in a sheared and

faulted zone and in part a stockwork type deposit.

Ill Geophysical Surveys

A baseline was laid out parallel to the regional

strike of the Keewatin volcanics. Perpendicular to this

baseline were traverse lines at 200 foot intervale. Along

these lines 100 foot stations were occupied in carrying

out the magnetic and electromagnetic surveys*

Magnetic Survey

The main features of the magnetic survey were

four diabase dykes that strike north - south across the

survey area. These magnetic observations are confirmed

by outcrop evidence. The dykes appear to all be of

Keweenawan age, Judging from their strike and magnetic

character.

Further features shown by the magnetic survey

are two areas of anomalous magnetics. These areas,

labelled Zones A and B, are unexplained by the local

geology.

- 3 -

There are marked indications of the northwest

trend to the volcanics in the area. These indications

are mainly in the southeast and northern portions of the

property*

The magnetic and the electromagnetic surveys

indicate faulting. Three faults are marked in yellow

on the maps.

Electromagnetic Survey

The area was covered with an electromagnetic

survey (these results accompany the magnetic results).

Then additional detail surveying was carried out in order

to better evaluate the conductors. The entire detail

work is shown on a second map together with the crossovers

of the coverage electromagnetic survey. The conductors

are numbered and are described in detail as follows:

Conductor l

This conductor lies within and parallel to

the most easterly dyke. Because of its relationship to

the dyke it is at present of secondary interest*

- 4 -

Conductor 2

The strike of this conductor is questionable

because of the nature of the crossover on line 12W. The

full importance of this conductor will not be assessed

until the geology in the immediate area is better known.

Conductor 3

This conductor has a strike consistent with the

volcanics. There is a break in the conductor on lines

24W and 22W. The eastern portion of the conductor lies

within one of the diabase dykes. Several conductor axes occur to the east of conductor 3 but are at present of

undeterminable importance.

Conductor 4

This conductor is a minor feature striking

parallel to the diabase dykes of the area. The value of

this conductor is unknown.

Conductors 5, 6. l , and 8

These four conductors are short in strike

extent. They all appear to parallel the Keewatin

volcanics.

. 5 -

In addition there are several crossovers of minor

importance. These conductors lack magnetic expression and their significance is dependent on their geological

environment*

Conductors 9 and 10

Conductor 9 was mapped from L66W to L46W. It parallels the diabase dyke to the south and appears to

have greatest dip angles on its western extremity. The

discontinuity or termination of the conductors at L46W

could be related to the interpreted fault.

Conductor 10 is structurally similar to 9 but extends east of the fault and parallels the dyke. The

dip angle readings are most impressive from L42W to L38W.

Both conductors 9 and 10 could be related to

shear zones running parallel to the dyke.

Conductor 11

This conductor parallels the diabase dykes of the area and on the basis of the present information it

is unimpressive.

. 6 -

Conductors 12 and 13

Conductor 12 was located with the coverage

aurvey while conductor 13 ia very likely a relocation

of 12 arising from the detail aurvey. The electromagnetic

character of 13 ia unimpreaaive but ita proximity to the

interpreted fault and magnetic cone A makea thia conductor

intereating.

Conductor 14

Thia minor conductor paralleia the Keewatin

volcanics but at preaent ia unproven.

Conductor 15

Conductor IS ia folded around a email magnetic

feature. Apparent termination and ditplacemant of thia

conductor ia added evidence of the fault shown on the

coverage map.

At present no evaluation ia placed on the other

numerous crossovers in the aurvey area.

IV Conclusions and Recommendationa

The magnetic aurvey has mapped the diabaae

dykes, volcanics and two anomalous magnetic highs.

- 7 -

There is alao evidence of three faults in the survey area.

The electromagnetic aurvey has outlined two

families of conductora. One ia parallel to the diabaae

dykes of the area and this family ia likely shearing

associated with the dykes. The other family of conductors

strikes parallel to the volcanica of the area and it ia

the more interesting aet of conductors.

It ia recommended that a study be made of the

geology of the Ram Kotia Mine area in the hope of placing

a more complete evaluation on the magnetic and electro

magnetic anomalies of group 5, before a drilling programme

ia outlined.

Respectfully submitted,

SULMAC EXPLORATION SERVICES LIMITED

T. R. Gledhill, Chief Geophysicist,

Toronto, Ontario.

April 8, 1960.

KAM KOTIA PORCUPINE

MINES l

GROUP 5

GROUP 2

GODFREY

11 - SAND.GRAVEL

l 4 l -QUARTZ DIABASE

l 1 - GRANITE, PORPHYRY

-GABBRO.HORNBLENDE

- TRANSITION ZONE

-GREENSTONE

Scale \ "-2640'

SUMMARY MAP

KIRO EXPLORATIONS LIMITEDROBB TOWNSHIP

ONTARIOMarch, I960

O

KAMISKOTIA

/•a 3

L E G E N D

MAGNETOMETER READINGS IN GAMMAS

CONTOURS OF MAGNETOMETER READINGS

CLAIM BOUNDARY AND CLAIM POST LOCATION

KIRO

xt\

T6

V

DRILL HOLE LOCATION (PROPOSED)

E.M. TRANSMITTER STATION

PROFILE OF ELECTROMAGNETIC READINGS

N 20 0 DIP ANGLE

CONDUCTOR

POSSIBLE CONDUCTOR

DIABASE DIKE

MAGNETIC ZONE

PLAN OF MAGNETOMETER AND ELECTROMAGNETIC SURVEY

EXPLORATIONSPORCUPINE MINING DIVISION

ROBB TOWNSHIP

ONTARIO

SURVEY BYSCALE l" * 200'

MARCH I960

SULMAC EXPLORATION SERVICES LIMITED

42A12SE0286 63.1841 ROBB 200

r- s

l \ l

KAMISKOTIA

PLAN OF DETAIL - ELECTROMAGNETIC SURVEY

KIRO EXPLORATIONS LIMITEDPORCUPINE MINING DIVISION

ROBB TOWNSHIP

ONTARIO

SURVEY BY

SCALE l" * 200 ARCH I960

SULMAC EXPLORATION SERVICES LIMITED

42A12SE32B6 63.1041 ROBB 210

Nv,./y/? L.r^^^ J

SURVEY

LIMITEDSIGN

jpMARCH I960

DES LIMITEDSCALE |" S 2640'

LOCATION MAP AND SHEET INDEX

T-5

t

S*

7

LEGEND

E.M. TRANSMITTER STATION

PROFILE OF ELECTROMAGNETIC READINGS

20 0 DIP ANGLE

CONDUCTOR (DETAIL)

POSSIBLE CONDUCTOR (DETAIL)

CONDUCTOR (COVERAGE)

POSSIBLE CONDUCTOR (COVERAGE)