UNDERGROUND EXPLORATION

REPORT

UNDERGROUND

EXPLORATION

Can01 Metal Mines Limited Stormy Group, Y.T.

COKTE?T S

Purpose of Report

Summary and Concluaione

F r e i g h t i n g Cnmp Layout P r e p a r a t o r y I'Jork Underground Vork Diarrond D r i l l i n g Econoniic G w l o g y Conclusions s n d W e c o i i n d a t i o n s Plms:

P l m of D r i l l Hole Intersections Shoving b 5 Assays

P P E ~ of D r i l l Bole I n t e r s e c t i o n s Showing

\JO-

3 Assays Eigh'; S e c t i o n s through Dizraowd D r i l l Koles

PURPOSE OF

REPORT

The purpose of t h i s r e p o r t i s t o d e s c r i b e t h o work c a r r i e d o u t d u r i n g t h e summer of 1959 and t o d e t a i l t h e r e s u l t s obtained.

No a t t e q t w i l l be made t o o u t l i n e t h e h i s t o r y o f t h e rcinoral c l e i ~ s , o r t o comment on such f a c t o r s a s l o c a t i o n , a c c e s s i b i l i t y , topography and c l i m a t i c conditions. These d e t a i l s may be obtained from previoue r e p o r t s of examining engineers.

An a d i t was d r i v e n i n t o t h e s i d e of' Stormy Kountain a% ~ 1 - i e l e v - a t i o n g e n e r a l l y lower t h a n t h e p o t e n t i a l o r e zone, and a considerable amount of d r i f t i n g , c r o s s c u t t i n g , and underground diamond d r i l l i n g was c a r r i e d out. Molybdenite m i n e r a l i z a t i o n was encountered f o r t h e n o s t p a r t over a r e l a t f v e l y l a r g e a r e a n e a r t h e c o n t a c t of a g r a n i t e mass and limestone which o v e r l a y s it. No orebody was found which would be of s u f f i c i e n t s i z e and grade t o be c o m e r c i a l .

The f o l l o w i n g conc1usior.s were reached:

The d e p o s i t i s of t h e co-tact z e t a ~ o r p h i c type.

The g r a n i t e - l i ~ . , x ~ . x c o n t a c t c--,- ~ o s t of t h e a r e a explored i s alraosc h o r i z o c t L ,

S o w m l y b d e n i t e o c c w s i n t h e skarn which represents t h e lower a l t e r e d s i d e of t h e limestone beds.

Kolybdenite o c c u r s i n small q u a n t i t i e s a t Eang s z a t t e r ~ d l s c a t l o n s i n t h e g r a n i t e i t s e l f .

Tke

ore g r d e occurrence in t h e g r a s i t e i n t h e i n i t i a l a d i t c r o s s w t a p p e n d t o 5e

i s o l r t e d occurrence.

I n d i c a t e d tonnage of o r e grade m t e r i a l I c r mclybdermm i s t o o small t o warrant e x p l o i t a t i o n .

Nearly a l l t h e molybdenite b a a r i n g rock scs::~zlns t u n g s t e n i n t h e form of s c h e e l i t e o r p o w e l l i t e buf s g 2 n no c o m e r c i a l tonnage of o r e grade m a t e r i a l i s i n d i c s t e d .

P r e p a r a t i o n s f o r t h e u n d e r g r o u ~ d e x p l o r a t i o n of t h e S t o r q clciros wore commenced i n January,

1959,

During Januzry and February a l l m j o r equipment and s u p p l i e a were purchased i n Vancouver and shipped b y water m d r a i l t o Whitehorse,

During February seven i n s u l a t e 6 plywood cabooses were b u i l t i n 'Giitehorse. These were e v e n t u a l l y loaded with f r e i g h t and hauled i n t a c t t o t h e property,

The cabooses and equipment and s u p p l i e s were t r a n s p o r t e d t o t h e p r o p e r t y by MacIsaac Construction o f ifhitehorse, who used t r u c k s t o Johnson's Crossing, t r a c t o r drawn s l e i g h s t o w i t h i n a mile o f t h e c m p s i t e , and a s t e e l go-devil f o r t h e f i n a l and a o s t d i f f i c u l t n i l e , F r e i g h t i n g t o o k from t h e middle of March t o t h e middle of May, a period of two months, and a t o t a l

o f

128 t o n s were rriovad.

C A W LAYOUT

m

rhe seven czbooses were s e t up on a f a i r l y l e v e l a r e a about

~ C O f e e t below t h e showing u s i n g one f o r ax o f f i c e , two f o r s l e e p e r s , one f o r k i t c h e n , one f o r d i n i n g room, one f o r washroom, and o2e f o r a storeroom, I n a d d i t i o n a coolproscor b u i l d i n ? , a machino shop, c. s m p l e g r i n d i n g house, a powder utagazine, a fuse a d cap house, E X ;

three t e ~ t frames were constructed on t h e s i t e .

C a p water supply c a m f r o n a spylag r 2 i i ~ h fed a water h o l e l o c a t e d u p h i l l f r o n camp, end vhich overflowed Lo form a small s t r e e x running through Yne camp yard.

Sewage was discharged do-m t h e m a q t a i n b6lor.r t h e c a p .

7 ,,

-.

Power was supplied b y a V i c t o r Coverkry Diesel ,U

a!::'

f i g h t i n g

p i a n t s e t on concrete i n t h e c o q r e s s o r b-d?di::g.

Coapressed a i r was supplied b y a C.I.R.

315

Gyr~-~.low co:L?ressor,

l a t e r augmented by a C.I.R. 600 Gyroflow corcpressor, b o t h l o c a t e d ct

camp,

A

3"

a l u n i n u conpressed a i r l i n e was run f r o s cezp ";t h s a d i t s i t e , a d i s t a n c e of 1600 f e e t a n g l i n g up t'ne s i d e of Storuy :.;c-antain.

A s i n g l e drum r e v e r s i b l e

5

x

6

a i r h o i s t was i n s t a l l e d below t h e a d i t s i t e and a

465

f o o t long t r e s t l e mounting 20 lb. r a i l was b u i l t up t h e slope t o t h e s i t e . A l l s e r v i c i n g was done with a f l a t c a r o p e r a t i n g on t h i s t r e s t l e .

The a d i t was d r i v e n u s i n g

C.I.R.

JR38

J a c k d r i l l s , Corset t a p e r e d s o c k e t j a c k b i t s , and corresponding d r i l l s t e e l . Xucking was done with an Einco 12-B l o a d e r and t r m i n g with 26 cu.ft, s i d e dump mine c a r s hauled by an Eimco 401 a i r l o c o ~ o t i v e . Track gauge was

18

inches.

Water supply f o r d r i l l i n g came from m e l t i n g snow h i g h e r up t h e mountain which made water from June t o t h e end of S e p t e ~ h e r . Water from t h i s snow was dammed up and led by g r a v i t y through p l a s t i c pipe t o t h e p o r t a l . A i r pressurized water t a n k s were used f o r a c t u a l d r i l l i n g .

The

a d i t was c o l l a r e d i n f r o z e n t a l u s rock on June l 3 t h , and between t h a t d a t e and September 24th a t o t a l of l , O p f e e t of' l a t e r a l work was c a r r i e d out. Contract p r i c e f o r labour was $11&50 pi;r f o o t snd t h e average advance p e r 8 hour crew-shift was 7.0 f e e t . Two s h i r t s p e r day were operated f o r most of t h e period,

A l l underground work was on t h e Stormy No.

5

X i n e r a l Claix, The i n i t i a l a d i t c r o s s c u t went 1U.O f e e t s t r a i g h t i n t o t h e no'vntain, T h i s was followed by

663.7

f e e t o f d r i f t i n g and c r o s s c u t t i n g e a s t o f t h i s p o i n t , and 2m.3 f e e t of d r i f t i n g t o t h e west o r north-west.

The o r i g i n a l i n t e n t i o n was t o d r i f t on t h e favourable g r s n f t e - limestone c o n t a c t , represented s p e c i f i c a l l y by t h e c o n t a c t of :ho

II d i o r i t e " with a garnet-epidote rock. This c o n t a c t was a t f i r s t

believed t o d i p i n t o t h e mountain from t h e t r e n c h e s and f o r t h i s reason t h e a d i t was c o l l a r e d well below t t e s u r f a c e exposure of t h e c o n t a c t ,

It

developed l a t e r t h a t t h e c o n t c c t , i n t h e a r e a of t h e t r e n c h e s , l a y alms"c:..w--izcntal m 3 x l y d i p y d d o m t o t h e south- west t o reach a d i t e l c < h t i o : ~ t o %he r r s ; t of t h e i n i t i a l c r o s s c u t .

D r i l l i n g was c a r r i e d o u t u s i n g a Boyles J V X michine recovering

AXT

core- ilater supply f o r t h e d r i l l had t o be c o ~ s e r v e d , z i d a l l d r i l l water was c o l l e c t e d and r e - c i r c u l a t e d ,

A t o t a l o f

3,460

f e e t of d r i l l i n g was conpleted i n

j6

hoics. Of t h i s

719

f e e t were i n

4

f l a t h o l e s probing f o r t h e c o n t a c t , 102 f e e t were i n 2 down h o l e s t e s t i n g t h e o r e occurrence i n t h e i n i t i a l a d i t c r o s s c u t , and t h e remaining 2,639 f e e t were i n 30 up h o l e s t o t e s t t h e c o n t a c t i t s e l f .

A l l samples were crushed and p u l v e r i z e d on t h e p r o p e r t y aqd s h i p p e d f o r a s s a y a s pulps.

hluck s m p l e s were t a k e n t h r o u g h o u t t h e underground h e a d i n g s and f a c e , w a l l and b a c k c h i p s a n p l e s t a k e n where warranted.

A l l diamond d r i l l c o r e was s p l i t and sampled t h r o u g h t h e " d i o r i t e " and s k a r n zones and f o r most o f t h e h o l e s s l u d g e s a a p l e s were c o l l e c t e d f o r c o r r e s p o n d i n g sections.

All

diamond d r i l l samples a r e c o n s i d e r e d t o be u n r e l i n b l e 2 The raolyb

c

e n i t e i s s o f t and f r i a b l e and e a s i l y ground u p , and c o r e samples no d o u b t t e n d t o b e low. For s l u d g e samples a c e r t a i n p r o p o r t i o n o f t h e molybdenite a c t u a l l y f l o a t s on t h e s l u d g e w a t e r u s i n g rod g r e a s e as r e a g e n t , and s a l t i n g o f samples a l s o o c c u r s by molybdenite co-sing f r o m t h e w a l l s o f a h o l e a t s e c t i o n s o t h e r t h a n t h e one b e i n g snmpied. These c o n d i t i o n s make f o r i n a c c u r a t e sample r e s u l t s which r e s u l t s might be t o o h i g h o r t o o low.

ECONOl4IC GEOLOGY

14ost l a t e r a l work was i?; g r a n i t e e x c e p t as p r e v i o u s l y noted t h e r e

155

f e e t o f t h e west t -,L?-t which f o l l o w e d t h e " d i o r i t e e " - s k a r l ;

c o n t a c t . 7- -"

,,-, r ~ - - ~ 3 ~ t a s explored. was a n;rrwr -;zc ~ 5 t h t h e " d i o r i t e "

- .

g e n e r , 2 - 2 1 ~ a l?ew i m h e s i n widt'r., ~ 3 2 -,'.s zz-.r.e%-epidote s k a r n v t r y i , ; ~ g u? -Lo o n l y a few f e e t i n w i d t h . 'I.-, , .-; z;cc as i n d i c a t e d by t h e -LL-enctes and t h e d l a m n d d r i i i h o l e ims:-,ec:Lons t o t h e n o r t h - we& o r %kc t - h - - ,v.Lb'iec:

-

t:~:.cd ~ r i d t k s up 'GO

35

Z.E% ~ s l y b d e n i t e m i ~ e ~ e i ~ z a t i o n 2 2 p e ~ r z t o occur- xhere _ t h e z o m or" C"u-l-:.tion i s t k e w i d e s t , The m i ~ r b d e n i t e n i n e r a l i z a t i o n in t % e p o r t i o 2 s" t h e c o n t a c t

s z e z i n t h e wesz d r i f t was s p o t t y a ~ d e r r a t i c , occuri*;-:g d i s s e z A n s t e d i n b o t h %he " d i o r i t e " and t h e s k a r n , i n d i v i d u a i h i @ g r c d e s p e c i n e n s were 2oun.2 b u t t h e m c k s a q l e s shoved no p o s s i b i l i t y o 2 t h e p r e s e n c e o f o r e g r a d e ~ m t e r i a l .

O c c a s i o n a l f l e c k s o f molybdeni%e we-a s;en a t s c a t t e r e d l o c a t i o n s i n t h e g r a n i t e , u s u a l l y a s s o c i a t e d w i t h a f i n e grainer2 a p l i t i c g r h n i t e s o c e t i n e s a p p s a r i n g t o be i n t h e form of' dykes,

Ore g r a d e m a t e r i d was e n c o m t e r e d i n a f r a c t u r e zone i n t h e g r a n i t e i n t h e i n i t i a l a d i t c r o s s c u t , T h i s zone k a s t h e shape of a

p i p e s o w 25 f e e t i n d i m e t e r and l o c a t e d a b o u t

15

f e e t below t h e contac",w?-are it d i p s dobm t o t h e south-west. Muck s a n 2 l e s from t h e

s e c t i o ~ ~ 1 ; t k e c d i t p a s s i n g t h r o u g h t h i s zone a s s ~ y e d

1.3725

?.!o (2.27% %os2)

f o r 110 tGns. The zone p r o b a b l y e x t e n d s upwards t o t h e c o c t a c t o r t o t h e surr'zce under t h e c o n t a c t , b u t two d r i l l h o l e s p u t down urrder it f a i l e d t o show a n y downward e x t e n s i o n . Even i f it extended dcwnward it would n o t be i m p o r t a n t w i t h t h e h o r n s m a l l a r e a it h a s . T'ne o c c u r r e n c e p r o b a b l y c o n t a i n s no more t h z n 1,000 t o m and a v a i l a b l e e v i d e n c e s u g g e s t s t h a t

it

i s an i s o l a t e d occurrence.

Of t h e 30 diamond d r i l l h o l e s d r i l l e d up t o t h e c o n t a c t one was i n a f a u l t and one was e n t i r e l y i n g r a n i t e . Of t h e 28 retiaining h o l e s which passed through t h e c o n t a c t zone o r a t l e a s t passed o u t of t h e g r a n i t e t h e r e were o n l y two h o l e s c o n t a i n i n g i n t e r s e c t i o n s which could

b e regarded a s being of o r e grade. These were

U7

and

U8.

The following t a b u l a t i o n shows a l l diamond d r i l l h o l e i n t e r s e c t i o n s w i t h c o r e sample a s s a y s over 0.10% Mo. Core l e n g t h s i n most c a s e s

r e p r e s e n t t r u e widths.

Core Core

Hole Mo. Length Hole No.

&

L e m t h

u3

0044 12.5

U15

0.75

2.5

Q'

2.08 8.6. U21 0.15

5.3

U 8

1.15

19.

1

_{U 3}

1 0.

13

17.5

U 9

1.

52

0.4 U32 0.25 6.0 U10 0.52 2.0

U35

0.48

7.5

ul3

0.40

10.0

Disregarding

U 1 3

and

U35

as being i s o l a t e d from t h e o t h e r s &t

t h e e a s t end of t h e a r e a , and c a l c u l a t i n g with a s s a y s from t h e o t h e r

9

h o l e s one can a r r i v e a t an average weighted a s s a y of

0.73'2

K O , an average width o r t h i c h e s s of 8.2 f e e t , and a r e l a t i v e l y f i a t a r e a covering 18,000 square f e e t .

The above f i g u r e s i n d i c a t e an a v a i l a b l e tonnage of 14,760 t o n s a s s a y i n g 0.7% 140. This could not be e x t r a c t e d economically REG i;

n o t c o m e r c i a l .

The w r i t e r ' s opinion i s t h z t t h e a c t u a l grade would be h i g h e r t h a n shown b y t h e scmplss b u t even m i n c r e a s e of

50%

would not changa t h e o v e r a l l p i c t u r e .

~ - 7 ~ ,,.,,~;YL % - ,

.

,. -.;.as f o u n d t o be: ~ S S C ) O ~ L ; C ~ , - 7 1 . ~ ~ the r;.,oly'odenm and

e i t h e r s d i e e l i t e o r powallixe a r e p;-a,G::.; 2'-as-; e v e r y h e r e t h a t raolybder,ite i s v i s i b l e . D r i l l hole s ~ 2 I . e ~ ::, s'll assayed f o r VK3, m d t h e following t e b u l n t i o n shows all dis;;. - . 0 1

intersections

c o n t a i n i n g a s s a y s o f over 0.10% XO3,

Core

3 Lezgth

C a l c u l a t i n g with t h e a s s a y s from U2 and U6 one can a r r i v e ~t an average weighted a s s a y of 0.87% I.iO3 and an average t h i c k n e s s of

5,6

f e e t over an a r e a of 2,000 square f e e t r e p r e s e n t i n g a tonnage of 1,120.

S i n i l a r i l y f o r h o l e s

U 3 ,

U7,

U 8 ,

U9,

U21,

U 3 1

m d U32 t h e z v e r q e a s s a y would be 1.1s/r!03, t h e average t h i c k n e s s

9.3

f e e t , and t h e

a p p l i c a b l e e r e a would be 13,000 square f e e t o r r e p r e s e n t i n g 12,030 tons.

For h o l e s U12,

Ul5,

U20 and U30 t h e average a s s a y would be 0,905 t h e average t h i c k n e s s

3.4

f e e t , and t h e tonnage f i g u r e would be

Combining a l l o f t h e above one could s p e c u l a t e on t h e presence o f

16,830

t o n s averaging 1.0574

I/?

and contained i n a d e p o s i t with an average t h i c k n e s s o f 7.0 f e e t .

I n view of t h e smll tonnage, t h e i s o l a t e d l o c a t i o n , and t h e m i l l i n g d i f f i c u l t i e s a s s o c i a t e d w i t h t u n g s t e n t h e r e i s no doubt t h a t t h e above m a t e r i a l cannot be considered as o r e a t t h i s time.

The v a l u e p e r t o n based on molybdenum v a l u e s and t h a t based on t u n g s t e n v a l u e s cannot be added d i r e c t l y t o g e t h e r f o r a t o t a l value

s i n c e t h e c o r e s e c t i o n s c o n t a i n i n g lvolybdenum do not c o i n c i d e e x a c t l y OiYn t h o s e c t i o n s c o n t a i n i n g tungsten. Also t h e p o r t i o n s of t h e c o n t a c t zone which c o n t a i n s i g n i f i c a n t molybdenum v a l u e s do n o t c o i n c i d e w i t h t h e p o r t i o n s which c o n t a i n tungsten.

CONCLUSIOKS AND RECOI4!:I2?TDM'IOXS

The work c a r r i e d o u t was e x t e n s i v e enough t o g i v e t h e showing a f a i r t e s t and t h e twenty f o u r Stormy claims a r e i n good s t a ~ d i n g u n t i l Nay,

1966.

No orebody of economic s i g n i f i c a n c e was discovered by v i r t u e of t h e underground work c a r r i e d o u t t n i s year.

The p r o p e r t y has s u f f i c i e n t m e r i t t o warrant f h r t h e r study.

It

i s recommended t h a t :

1.

One caboose be l e f t on t h e campsite f o r f'uture use,

2, A l i m i t e d amount of p r o s p e c t i n g be c a r r i e d o u t on t h e c l d m s ,

e s p e c i a l l y on t h e t o p and o p p o s i t e s i d e of t h e c i r q u e t o t h e north-west o f t h e a d i t .

3.

Fbrther s u r f a c e d i s c o v e r i e s , i f any, be checked by t r e n c h i n g , by b u l l d o z e r i f possible.

4.

No f u r t h e r underground work be undertaken u n l e s s new s u r f a c e d i s c o v c r i o s supply s u f f i c i e n t encouragement t o warrant it.