St-42A05NE0121 63A.447 TURNBULL 010

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DETAIL GjSOLOGT OP

JOHN URCHE

TUHNBULL TOWNSHIP

w..••/f.-.'.',

I* '*-BY

HfiSPI LIMITED

y. y;S* f

Survoy conducted Sept. 6 - 17/64

J, CRUNg

The ion cl::i?ns comprisi'v the J.arche Group lie one claim

v..v t, of the :;o;]frey-Turnbull boundary, The north boundary is a

half ile rurt?. of the f two mile post and the south boundary is a

11''; If Mile south of the two mile post,

Cons:'dera le surface work as well as a numerous ;-eophysical

surveys h;.ve been conducted on t 1 is property in the past. At the time

of writing t' is information was not available to the writer.

In the fall of 1964, *. i.-'Uonnel] map 1 ed this "roup as part

of a from- of forty-four clains in Tunrbull Township.

T he claims are numbered F. 51u44~4^ incl., i'. 52452-55 incl.,

The uoin reolc-^ic feature, of the ten claim /rrour is a band

of volcanic rockn which liave been ini-ru ed by fabbro!c and diabasic

'.:af:'c roc!'s -nd r'.nitic rocks ;.rri ;ipranitic derivatives.

?rwt\ o.n economic standpoint the most Interestini7 foriiiation

is the volcanic for-.ation.

The volcanic rocks exposed an-i encountered in drill holes

:;re .-'.ndcsitic and rhyolitic in conpositiori. The latter may be wholly,

or in port, of sedimentary origin.

A few small sulphide occurrences have been found within

the volcanic formation.

The Ixisic intrusive rocks of the area lu.ve been intruded

as dikes ''n d/or sills. They have -eon napped as rv.rt of a rnbbro-•;..' . f .

d i;-b: se cor pi ex, probably a-soci ted with the ilobb ;*abbro intrusion,

The vrani tic rocks ;~nd --ranitic derivatives ranjre in coiapo-

s li. t! from wh.nt appe'.rs to be a nu^rtx-triOnzonito to a quartz diorite

,.;Ith both tx)rphyr ! tic ;:nd :ion-rorrhyritic f;.-cies.

n't'j o f tiii; rocks of the area h r. ve undergone some metamorphism.

The andesite s are som?whnt chloritic and locally are carbonitized and

silicified. The rhyolites exhibit waxy sericitic and chloritic

alteration. The more basic rocks are all araphibolitized to some degree.

If u strict petrologic classification were used all of the rocks would

probably fall within the creenschist facies of the metamorphic suite.

^nib-economic sulphide deposits and very low //rade gold

shov.'i'ifs h-' ve been encountered. '

'Jhe f.roup has received extensive geophysical coverage and

h';s b-en extensively prospected and has received some drilling,

If any subsequent v.'ork is contemplated it is recorctnended

tlr.t a limited i.iduced ^olarizu-. ion survey be conducted in the

vicinity of the '-now. sulphide occurrences.1 T

Ac cess to tho area is [Tovided by a .jeep road whoch leaves

the Ku::askotiu hif-hvay to the -outh of the Mount Jamieson fire tower.

The roc. d f o"; lows the old Lally Road along Godfrey Creek into Tunrbull

Township.

Table of Formations

Andesite

HV)yolite Massive rhyolite

Rhyolite Porphyry

Fragmental Rhyolite

Intrusive Contact

/uartz-feldspar porpJiyry

Intrusive Contact

Gabbro Diabase in part

All the rocks of ths area have undergone low grade metamor

phism and probably belong to the greenschist facies of the metamorphic

suite. In moat cases the original nature of the rocks le still evident,

1\e oldest rocks encountered are acid and basic volcanic

tynes which appear to have a north-northwest strike and a steep

southwest di r.v^

Andesite

The andesitic rocks are fairly uniform. They are medium

green, fine~r,rr,inod chloritic rocks which have locally been heavily

carbcnitized and somewhat silicified. Foliation and schistosity are

best developed within the andesites although no rocks within the map

area are highly schistose.

The rhyolites are somewhat more complex than the andesite

grour. Three rr.ajor divisions were mapped. They were termed rhyolite,v^x

quartz-rhyolite porphyry, and fragmental rhyolite.

In general the rhyolite group is light f~rey to pale greenish

in colour, extremely fine-prained, massive and normally displays a

greenish-yellow, waxy looking sericitic alteration.

The presence of 5-15# round, clear or pale bluish quarts

phenocrysts Distinguishes the prophyritic rhyolite group. The matrix

of quartz-rhyolite porphyry is identical to the massive rhyolite.

i'.^uartz-fledspar porphyry

This rnme was chosen for a group of medium grained, light

to medium coloured rocks whose composition varied from a quartz-

monzonite to a quartz diorite,

For the most part the group is porphyritic. The matrix is

variable from monzonitic to dioritic in composition and contains

5-12p prominent clear, anhedral ^uartz phenocrysts.

'/he mafic Minerals r" this group are slightly chloritized

or mphibeli.t ised. -iltcrat'' on ^f the more acidic minerals is expres

sed a- - inor sericitization and cnrbonitization of the feldspars.

0^cassio::;iHy, local kaolinitic alteration was encountered.

vfebbro-Jiabose Complex

ihero are :iu,ierous outcrops of a dark, coarse grained

a:n:hibolitized rock in Uuj r.ap are;-. Minor pyrite and pyrrhotite are

co:,-non accessory minerals :'.n:5 magnetite is usually present in amounts

between 5 atui 15?'.

i''or the mo?t part trie individual crystals are anhedral to

sub-hedral ,lthou;;h sonic outcrops and portions of sorae outcrops

exhibit a -li stinct diabasic texture.•*~s

These rocks arc extremely difficult to correlate and it was

o;i]y v.-ith the aid of regional electro-raaj^netic raaps and detailed

m.'i.rnetic m * p s that it w: " decided th.' t the c^bbro and gabbroic rocks

of dialv sic texture were yart of an extensive dike-sill complex and not

an extensive intrusive irago. If t'.is interpretation is correct then

the ra^broic-cSi-^jasic rocks are the youngest in the area as dinbasic

dikes were found, to cut all other formations.

Ferroi.v;j'nesian minerals, usually ;unpi:iibolitized, comprise

50 to 70/u of the rock .,1th the remainder being feldspar and magnetite.

Th e feldspars ar-; usually so.v.evhat carbonitized and often

stained ' li f Jit yellowish broi-.n. Cccasionally epidote and quartzV,*

are present as accessory Minerals.

Field evidence of faulting or folding is very scant, North-

u'e-.-.t liner.rs and east to slightly east southeast linears aro

Toninent ; -nti common. It is believed th';t the region has been ex-

tensivclv f - ultod hut there is little field evidence to substantiate this.

'Ih e faults shown on the map are postulated from electro-

M-vnctic date.

A 'iild foliation with a north-northeast strike and steep

dip is seen in all rocks except the gabbroic masses. In one locality

a strong, narrow shear v/ith an easterly strike was noted.

There are a few minor chalcopyrite occurrences within the

:::,-.r area, i yrrhotit , has been encountered in several drill holes.

;yrite is expensively distributed in small quantities throughout

all the rock types. Irospecting and smapling of numerous quartzr

viens h"^ indicetod tlic presence of si:.all sub-economic quantities of

r old.

fully submitted

JDC/Jf

42A05NE8121 63A.447 TURNBULL020

ME3J-1 MINES LIMITS)

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•|

DETAIL GEOLOSY Of

}'ART OF

TURNBULL TOMSHIP. ONTARIO

B!

DUNCAN CaOKB, JUNK 3 .1965

? is-a:.M-'.:;ik;^l4M••' -"'*''" :*(- : ??^Sf'''lsj

^^0.'-*SS

IHTHUJUCTluK '-; : . ^ /l; 7 \1' : ' '

The forty-four claims of the Turnbull group are located to

the west of the common boundary between Tuimbull and Godfrey townships

and between the one and four nile posts*

This proup of forty-four claims includes ten claims recorded

in the name of John Larche and optioned to Hes pi Mines Limited,

Surface work, including trenching, detailed mapping and

prospecting, and geophysical and geochemical surveys were performed

during the fall of 1959 and the spring of I960 under the auspices of

H,D. McLeod and A. Amos.

In the fall of I960, an electro-magnetic survey and a

limited packsack drilling program was carried out under the super

vision of J.P, Sheridan for Chipman Lake Mines Limited.

In the flail of 196ft, A. O'Donnell began a detailed geological

survey of one hundred and fifty claims in Turnbull and Godfrey

Townships. Initially it was planned to map the whole claim group at

a scale of one inch to two hundred feet using East-West ;~rid lines,

cut at two hundred foot Intervals for control. The project was

abbreviated v.hun a retailed electro-magnetic survey failed to indicate

any significant conductors on the claim c**011?*

Detail mapping was conducted on claims P. 52230-1*

p. 52225-26, f. 53658-61, P. 53063, P. 53075-6, P. 53793, P. 52216-24,

inclusive from September 16 to October 15, 1964.

f** -H* 1 . i

V"'4*. - eff;f?:p|||:-*t;r^ ! T ...;^: ' - •"''"';: ' : :

SlflllARY . - ' ' f;^y^^ f^^ : , K*V ^r''^;.-'^;':"*. . ' , ".•'•'-.'•y . "v -. ! /..;..'"' ;i X. '. v..^'/" :'.' '-'"-;. !'" --.--'' '-- --

The main geological features of the-Torty-fi^-'-^i^.T" ' ~".''"~:'; '^ : r .'- " ' ' ;*--'. : . "''". *f

are a band of volcanic rocks which have been intruded by gabbroic aiwt H ;

diabasic mafic rocks, granitic rocks and granitic deriVativ^tf* : T

From an economic standpoint, the most interesting formation ;

is the volcanic formation. : r/

The. volcanic rocks are composed of andesitic and rhyolitio *

types, the latter is in part and may be wholly, of sedimentary

origin. Diainond drilling has shown that areas thought to be1 . ' i ' 'V'*'5 ;*

underlain wholly by rhyolite are underlain by narrow bands of rhyolite, V;- ',, -' '. V. ' -\ ' '.'jet

.indesit-e and well-banded cherty formations. A few small sulphide , y"

occurrences h^ve been encountered within the volcanic formation.

The south-western portion of the area has only a few outcrops,

most of which are coarse-grained, very dark and gabbroic in compo- r:

sition. Some of the outcrops mapped have a definite diabasic texture

while others show no evidence of this texture, During the Initial

stages of fi did mapping, it was thought that a large gabbroic body

war, being mapped. Later comparison with detailed magnetometer work

and aerial magnetometer plans indicate that the gabbro^and diabasic

types which wrrc mapped as separate units are really part of a complex. ' .-- - - . ' , ,'v,-

system of dikes and/or sil]* which are gabbroic in composition and

some tires exhibit a diabasic texture.

The granitic rocks and granitic derivatives affclige in

composition from what appears to be quartz-monuonite toouartfc- ' . .' - 'V

diorite with both porphyritic and non-porphyritic facies. . , t ::';;:' ;

All of the rocks of the area have undergone some

r.ietamorohisri . The andeaites are somewhat chloritic and

fraP' fe-.:.&V ar* carbonitized and silicified. Tha rt^611te8|*3*|bil. |irr serioitio

and chloritic alteration, the mora basic rock* aro all amphibolitiaed

to some degree. If a strict petrologic classification were used all

of the rocks would probably fall within th* grtenschist facies of the

mettjnorphic suite.l

*tf?;--

V.Sffr, '

Sub-oconomic sulphide deposits occur within the area and

nirior nold hjis been encountered, i'.uch of the area has been intensely

prospected and has received considerable geophysical coverage.

The south-western portion of the grid appears to be under

lain by an andesite-rhyolite-chert complex. In view of the recent

basemetal discoveries in the poneral Porcupine area the south-west

portion of the map arcs is of geological interest, i'uch of this

section has little rock exposure. Any subsequent geophysical work

uhould be planned with 'ho regional geolopy in mind. All magnetic

.-md geologic fe-.tur^s appear to have a general north-northwest

strike with only minor local variations.

ACCESS ' ; . ; : ' : '- : -.'i ; ; '

Access to the area is provided by a jeep road which leaves

the Kamiskotia Highway to the south of the Mount Jamieson fire 'tourer,

The road f ollows the old L&lly IJoad along Ckxif rey Creek into Turnbull

Township.

OF F'Uw-

Table of Formations

Andesite

Rhyolite Massive Rhyolite

Rhyolite Porphyry

Fragmental Rhyolite

Intrusive Contact i Quartz-feldspar porphyry

Intrusive Contact

Gabbro diabase in part

All the rocks of the area have undergone low grade

metamorphism f;nd probably belong to the greenschist facies of the

metamorphic suite. In most cases tho original nature of the rocks

is still evident.

The oldest rocks encountered are acid and basic volcanic

types wl.ich appear to have a north-northwest strike and a steep

southwest dip,

Andesite

The andesitic rocks are fairly uniform. They are medium

tureen, fine-grained chloritic rocks which have locally beeft heavily

carbonitized and somewhat silicified. Foliation and schistosity are

best developed within the andesites although no rocks within the nap

area are high3.y schistose,

'. *,,!ifr "v'"';- '. v", "' '/:,X' J,

^".^liv^'f??* v". l-i

Rhyojuitos ; "-..' " ;:; ::'.r;;-". : Y-c -.'^

The rhyolites are somewhat more complex than . t*neL^n4ej*ite

f.roup. Three major divisions wore mapped, They were tei^d l^hyolit*^

quartz-rhyol ite porphyry and fragmental rhyolite, Y

In gene-rial the rhyolite group is light grey to pale green

ish in color, extremely fine-grained, massive and normally displays

a greenish-yellow waxy looking sericitic alteration, f ,

The presence of 5-153* tiny, round, clear or pale bluish

quartz phenocrysts distinguishes the prophyritic rhyolite group*

The matrix of quartz-rhyolite porphyry is identical to the massive

rhyolite.

The fragmental rhyolite is characterized by the presence

of numerous angular to sub-angular rhyolitic and prophyritio fragments

cemented in a massive rhyolite matrix. Some fragiaents We 3 to U

inches in size but tho majority are much smaller . 3he majority

of the fragments appear to be aligned with their long axes paralltl )

to the foliation, v,i': .

Quarts-feldspar Porphyry

This name was chosen for a group of medium-grained, light

to media.": coloured rocks whose composition varies from a quai*tz-

rnonzonite to a quartz diorite.

For the nost mrt, the group is porphyritic. She matrix

is variable from monzonitic to dioritic in composition and contains

5-12# prominent clear, anhedral quartz phsnoorysts*

The mafic minerals of t is group are slightly chloritieed

or amdiibolitized. Alteration of the more acidic minerals is r :

.expressed as ;;iinor se.ricitiaation and oarbonitizatlon of toe

feldspars. Occassionally loeaLalteration wes encountered.kaolinitic f r:

Complex

There are numerous outcrops of a dark,

amphibolitized rock in the map area. Minor pyrite and pyrrhotite

are co.mon accessory minerals and magnetite is usually present in

amounts between 5 and 15^*

for the most part the individual crystals are anhedral to

subhedral although some outcrops and portions of some outcrops exhi

bit a distinct diabasic texture.

ihese rocks are extremely difficult to correlate and it was

only with the aid of regional electro-magnetic maps and detailed

magnetic maps that it war, decided that the gabbro and gabbroic rocks

of diabasic texture were part of an extensive dike-sill complex and

not an extensive intrusive mass. If this interpretation is correct

then the gabbroic-diabasic rocks arc the youngest in the area as

diabasic dikes were found to cut all other formations.

Ferromagnesian minerals, usually ainphibolitized,

comprise 50 to 70# of the rock with the remainder being feldspar

and magnetitite. Ihe feldspars are usually somewhat carbonitized and

often stained a light yellowish brown. Occasionally epidote and quartz

are nresent as accessory minerals.

Field evidence of faulting or folding is very sOant.

North-northwest Itnfors and east to slightly east southeast l*nftareo

are prominent and common. It is believed that the region has beon

extensively faulted but there is little field evidence to substan

tiate this.

The faults shown on the map aru postulated from electro-

r:u-.^nctic data.

A mild foliation with a north-northeast strike and steep

iip is seen in all rocks except the; gabbroic masses. In one locality

a strong, narrow gjaeajr.t ^th an easterly strike was noted.

There ara neveral minor chalcopyrite occurrences withint

the nap area, iyrrhotite has been encountered in several drill holes.

hyrite is extensively distributed in small rmantities throughout all

the rock typ^es. }*rospectin,^ and sampling of numerous Quartz viens has

indicated the presence of snail sub-economic quantities of gold. Non

economic deports have been located within the map area,

The recion is geologically and structurally favourable for

rold or basemetal occurrences. None of the numerous electro-magnetic

surveys has indicated a significant conductor. If further work is

planned porhnps a limited Induced polarization survey in the vicinity

of the known sulvhide occurrences would be the most useful and in

form:- ti ve device.

^spectfully,

V/Vf*DC/J f . \ D; Crone ^—

e

TRAIL,WINTER ROAD

TWP. BOUNDARY

SPRUCE OR CEDAR SWAMP

TRENCH , PIT

CLAIM POSTS

DRILL HOLE

OUTCROP BOUNDARY

HIGHER GROUND

GLACIAL STIAE

FAULT

STRIKE i DIP

STRIKE ONLY

BEDDING ALTITUDE . DIP KNOWN

CONTACT

DIABASE

GABBRO

QUARTZ-FELDSPAR PORPHYRY

2] ANDESITE

RHYOLITE

RHYOLITE (PORPHYRY)

RHYOLITE (FRAGMENTAL)

AST.

ROBI JAMIESON

OD

AST.

4 rt.

. 3 Mi

l

rt t.

i rt t.

SCALE :i"^ 6000'

MESPI MINES LTD. GEOLOGICAL SURVEY

TURNBULL TWP. s c ALE: i" s 200'

42A05NE0121 63A.447 TURNBULL

P.53776

58 N

56 N

MAPPED BYlART O'DONNELL OC.IO-OCT. 15,1964 DRAWN 8Y: W.B. CAUGHELL

FREY C REEK

^3658; l

P.52233 P.52232 P. 52230

4 3 MILE POST

P. 52224

P.52223P. 52222

P.522I6 P.52217 P. 52218

P. 51648 P. 53558

P. 5I6'47

P.5I644P.52940

TRAIL.WINTER ROAD

TWP. BOUNDARY

SPRUCE OR CEDAR SWAMP

TRENCH . PIT

CLAIM POSTS

DRILL HOLE

OUTCROP BOUNDARY

HIGHER GROUND

] GLACIAL STIAE

FAULT

STRIKE i DIP

STRIKE ONLY

BEDDING ATTITUDE. DIP KNOWN

CONTACT. INTERPRETED

d) 2 MILE POST

P. 51S46P.5I645P.52452

DIABASE

GABBRO

QUARTZ-FELDSPAR PORPHYRY

ANDESITE

RHYOLITE

RHYOLITE (PORPHYRY)

RHYOLITE (FRAGMENTAL)

P. 52453P.52454

P. 52455

P. 53373 l

\ A P. 53372P. 53539

P.53374

JAMIESON

SCALE : \"- 6000'

P. 53379

P.53384

UJ K

MESPI MINES LTD.GEOLOGICAL SURVEY

TURNBULL TWP.

se ALE: r* 200'LARCHE l ROUSSEAU OPTION - ——-

MAPPED BY: ART O'DONNELL DRAWN BY;R.C. DENOMMEE

.8- OCT. 10,1964

i 3 MILE POST

P 52223

^.. s * / ——x* air * '•"••*"'^

TRAIL,WINTER ROAD

TWP. BOUNDARY

SPRUCE OR CEDAR SWAMP

TRENCH . PIT

CLAIM POSTS

DRILL HOLE

OUTCROP BOUNDARY

HIGHER GROUND

GLACIAL STIAE

FAULT

STRIKE S. DIP

STRIKE ONLY

BEDDING ATTITUDE, DIP KNOWN

CONTACT. INTERPRETED

O 2 MILE POST

DIABASE

GABBRO

QUARTZ-FELDSPAR PORPHYRY

ANDESITE

RHYOLITE

RHYOLITC (PORPHYRY)

RHYOLITE (FRAGMENTAL)

P. 53374

JAMIESON

SCALE:I'S sooo

P. 53379

P. 53384

MESPI MINES LTD. GEOLOGICAL SURVEY

TURNBULL TWP.SCALE :i"s 200'

bl KIkoo o

MAPPED BY:ART O'DONNELL DRAWN BV:R.C. DENOMMEE

OCT. 10,1964

00

2 S

4S

65

8 S

10 S

12 S

14 S

16 S

18 S

20 S

22 S

24 S

26 S

28 S

30 S

32 S

34 S

36 S

38 S

40

42 S

44 S

46 S

48 S

50 S

52 S

54 S

56 S

58 S

60 S

62 S

64 S

66 S

68 S

70 S

72 S

74 S

76 S

78 S

80 S

82 S

84 S

86 S

88 S

90 S

92 S

94 S

96 S

98 S

100 S

102 S

104 S

106 S

108 S

110 S

112 S

114 S

116 S

118 S

120 S

lA 10 42A05NEai21 63A.447 TURNBULL