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GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT ON THE EAST ARM PROPERTY [RIME 1 - 26 AND 29 CLAIMS] ATLIN MINING DIVISION BRITISH COLUMBIA LOCATION: Latitude 59'44' N Longitude 137'3.2' W I NTS 114P/llW, 12E & 13E c-> OWNER: , St. Joe Canada Inc. OPERATOR: St. Joe Canada Inc. ' / ' January 1985 David R. Kennedy Malcolm 'R. Warwick GEOLOGICAL BR~NCH ASSESSMENT RF~QRT

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Page 1: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

GEOLOGICAL, GEOCHEMICAL AND G E O P H Y S I C A L REPORT

ON THE E A S T ARM PROPERTY

[RIME 1 - 2 6 AND 2 9 CLAIMS]

A T L I N M I N I N G D I V I S I O N

B R I T I S H COLUMBIA

LOCAT ION: L a t i t u d e 5 9 ' 4 4 ' N

L o n g i t u d e 137'3.2' W I

NTS 1 1 4 P / l l W , 1 2 E & 1 3 E

c-> OWNER: , S t . J o e C a n a d a I n c .

OPERATOR: S t . J o e C a n a d a I n c .

' /

' January 1 9 8 5 D a v i d R. K e n n e d y

M a l c o l m 'R. W a r w i c k

G E O L O G I C A L B R ~ N C H A S S E S S M E N T R F ~ Q R T

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TABLE OF CONTENTS

Pase No . .............................................. SUMMARY C i l

......................................... INTRODUCTION , 1

............... . 1 L o c a t i o n . Access and Topography 1

2 . P r o p e r t y ....................................... 3

3 . H i s t o r y ....................................... 5

. ................................ 7 4 S a f e t y Program

..................................... REGIONAL GEOLOGY 7

.............................. OBJECTIVES 1984 PROGRAM 1 3

............................................ LOGISTICS; 1 5 I

.............................. W O R K PROGRAM - X-SHOWING 1 6

. 1 G r i d P r e p a r a t i o n .............................. 1 6

. 2 M a g n e t i c S u r v e y ............................... 1 6

. 3 VLF-EM Survey, ................................ 1 6

. ................*........... 4 G e o l o g i c a l Mapping 1 7

.............................. RESULTS AND CONCLUSIONS 1 8

M a g n e t i c S u r v e y ............................... 1 8

VLF-EM S u r v e y ................................. 1 8

............................. G e o l o g i c a l S u r v e y 1 8

......................... W O R K PFlOGRAM - GLACIAL STUDY ?O . 8 ............... BROSTER'S OBSERVATIONS AND CONCLUSIONS 2 1

...................................... RECOMMENDATIONS 23

....................................... COST STATEMENT 24

.......................... STATEMENT OF QUALIFICATIONS 25

APPENDIX - R O C K GEOCHEMICAL AND A S S A Y VALUES

I I

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--- --- - - -- - -

1.

INTRODUCTION

1. LOCATION, ACCESS A N D TOPOGRAPHY

T h e E a s t A r m p r o p e r t y t o t a l s 4 8 5 c o n t i g u o u s

u n i t s . I t i s l o c a t e d i n t h e A t l i n M i n i n g D i s t r i c t . I t

i s c e n t r e d u p o n t h e E a s t A r m G l a c i e r , l o c a t e d i n , t h e A l s e k

M o u n t a i n R a n g e w h i c h , i n t u r n , i s l o c a t e d i n t h k n o r t h -

w e s t e r n t r i a n g u l a r p o r t i o n o f t h e p r o v i n c e o f B r i t i s h

C o l u m b i a t h a t a b u t s t h e S t a t e o f A l a s k a . T h e p r o p e r t y ' s

c e n t r a l c o o r d i n a t e s a r e 59 '44 ' n o r t h e r n l a t i t u d e a n d

1 3 7 ' 3 2 1 . w e s t e r n l o n g i t u d e . [ N T S 1 1 4 P , 1 1 W , 1 2 E & 1 3 ~ 1 .

,

A l o c a t i o n map i s i n c l u d e d a s F i g u r e 1.

T h e p r o p e r t y i s a c c e s s i b l e b y h e l i c o p t e r f r o m

t h e H a i n e s R o a d 0 2 W h i t e h o r s e [ 2 0 0 km]. H a l n e s R o a d

c o n n e c t s H a i n e s , A l a s k a t o t h e A l a s k a H i g h w a y a t H a i n e s

J u n c t i o n , Y u k o n . D e z a d e a s h L o d g e , l o c a t e d a t K m 2 0 2 o n

t h e H a i n e s h i g h w a y , w a s u s e d a s a b a s e o f o p e r a t i o n s .

A l l o f t h e c i r q u e s a n d v a l l e y s o n t h e p r o p e r t y i

, , a r e o c c u p i e d b y g l a c i e r s . T h e s n o u t o f t h e E a s t A r m

G l z c i e r d e s c e n d s t o 7 5 0 m e t r e s [ a . s . l . ] . J a g g e d r i d g e s

a n d p e a k s a s c e n d f r o m t h e i c e t o 2 , 2 0 0 metres . O u t c r o p

o c c u r s a s s t e e p , u n s t a b l e r o c k f a c e s .

A l i g h t c o v e r o f a l p i n e v e g e t a t i o n s t a b i l i z e s

t h e g e n t l e r t a l u s s l o p e s .

W i l d l i f e c o n s i s t s o f g r o u n d s q u i r r e l s , m o u n t a i n

g o a t s a n d g r i z z l y b e a r s .

Page 7: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …
Page 8: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

- - . -- - - - -

i i

3 . i 1

3 1 1

2 . PROPERTY 1

The p r o p e r t y i s s i t u a t e d i n t h e A t l i n M i n i n g D i v i -

s i o n a n d i s w h o l l y owned b y S t . J o e Canada.

R e l e v e n t d a t a c o n c e r n i n g t h e c l a i m s c o n s t i t u t i n g .

t h e E a s t A r m p r o p e r t y i s t a b u l a t e d b e l o w :

C l a i m Name Number U n i t s D a t e o f R e c o r d

R ime 1 1 7 7 5 2 0 J a n u a r y 28 , 1 9 8 3 R ime 2 1 7 7 6 2 0 J a n u a r y 28 , 1 9 8 3 R ime 3 1 7 7 7 1 2 J a n u a r y 2 8 , 1 9 8 3 R ime 4 1 7 7 8 2 0 J a n u a r y 28 , 1 9 8 3 R ime 5 1 7 79 2 0 J a n u a r y 28 , 1 9 8 3 R ime 6 1 7 8 0 1 6 J a n u a r y 28 , 1 9 8 3 R ime 7 1 7 8 1 2 0 J a n u a r y 28 , 1 9 8 3 R ime 8 1 7 8 2 2 0 J a n u a r y 28 , 1 9 8 3 R ime 9 1 7 8 3 1 6 J a n u a r y 28 , 1 9 8 3 R ime 1 0 1 7 8 4 2 0 J a n u a r y 28 , 1 9 8 3

C) Rime 11 1 7 8 5 2 0 J a n u a r y 28 , 1 9 8 3 R ime 1 2 1 7 8 6 2 0 J a n u a r y 28 , 1 9 8 3 R ime 1 3 1 7 8 7 2 0 J a n u a r y 28 , 1 9 8 3 Rime 1 4 1 7 8 8 2 0 J a n u a r y 28 , 1 9 8 3 R ime 1 5 1 7 8 9 2 0 J a n u a r y 28 , 1 9 8 3

1 R ime 1 6 1 7 9 0 2 0 J a n u a r y 28 , 1 9 8 3 R ime 1 7 1 7 9 1 , 2 0 J a n u a r y 2 8 , 1 9 8 3 -

Rlme 1 8 1 7 9 2 2 0 J a n u a r y 28 , 1 9 8 3 Rime 1 9 1 7 9 3 2 0 J a n u a r y 2 8 , 1 9 8 3 R ime 2 0 179 4 2 0 J a n u a r y 28 , 1 9 8 3 Rime 2 1 2 0 7 0 2 0 November 1 6 , 1 9 8 3 R ime 22 2 0 7 1 1 5 November 1 6 , 1 9 8 3 R ime 23 2072 2 November 1 6 , 1 9 8 3 R ime 2 4 2073 2 0 November 1 6 , 1 9 8 3 R ime 25 2074 2 0 November ,16, 1 9 8 3 R ime 26 2075 1 8 November 1 6 , 1 9 8 3 Rime 29 2078 6 November 1 6 , 1 9 8 3

- - b

27 c l a i m s 485 u n i t s .---- -

Page 9: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

4 .

3 . HISTORY

I n 1 9 7 4 , p e r s o n n e l o f t h e S w i s s A l u m i n u m M i n i n g

C o m p a n y o f C a n a d a SAM CAN^, l o c a t e d s t r e a m s e d i m e n t g e o -

c h e m i c a l a n o m a l i e s i n H e n s h i C r e e k . T h i s l e d . t o t h ~ i r

d i s c o t j e r y o f m a s s i v e s u l p h i d e b o u l d e r s i n t h e o u t w a s h t i l l

f r o m t h e E a s t A r m G l a c i e r .

SAMCAN s t a k e d a t o t a l o f 2 1 m i n e r a l c l a i m s , com-

p r i s i n g 3 0 9 u n i t s o v e r t h e a r e a s o f i n t e r e s t .

I n 1 9 7 5 , SAMCAN p e r s o n n e l m a p p e d t h e E a s t A r m

g l s c i e r b a s i n a t a s c a l e o f 1 : 2 5 , 0 0 0 . M a g n e t i c a n d e l e c -

t r o m a g n e t i c s u r v e y s were c o n d u c t e d o v e r t h e same r e g i o n .

A l a r g e m a g n e t i c a n o m a l y w a s l o c a t e d u n d e r t h e E a s t A r m

g l a c i e r , c e n t r e d r o u g h l y 8 . 5 k i l o m e t r e s f r o m t h e g l a c i e r ' s

t e r m i n u s [ B . c . A s s e s s m e n t R e p o r t No. 5 8 9 1 1 .

CI By 1 9 8 0 , SAMCAN p e r s o n n e l c o n t i n u e d m a p p i n g o f

t h e p r o p e r t y a n d c o n d u c t e d a g r a v i m e t r i c s u r v e y o v e r t h e 4 t

m a g n e t i c a n o m a l y a n d o t h e r p a r t s o f E a s t A r m G l a c i e r . 1 T h e g r a v i m e t r i c s u r v e y c a l c u l a t e d i c e t h i c k n e s s

t o b e 3 0 0 metres 2 5 0 me t res . [ B . C . A s s e s s m e n t R e p o r t No.

9 5 1 6 3 .

I n 1 9 8 1 , SAMCAN p e r s o n n e l c a r r i e d o u t a d e t a i l e d

g e o l o g i c a l s u r v e y w h i c h i n c l u d e d m a p p i n g a t a s c a l e o f

1 : 1 0 , 0 0 0 , p r o s p e c t i , n g a n d p e t r o g r a p h i c w o r k .

I n 1 9 8 1 , t h e "X S h o w i n g " , a c o p p e r - r i c h , f i n e -

g r a i n e d , b a n c e d , m a s s i v e s u l p h i d e z o n e , w a s d i s c o v e r e d .

No a n a l y s e s w e r e p e r f o r m e d o n s a m p l e s c o l l e c t e d f r o m t h e

X S h o w i n g a n d g o l d w a s n o t r e c o g n i z e d e el la V a l l e p e r s o n a l I

0 c o m m u n i c a t i o n ] . T h e X S h o w i n g i s l o c a t e d a p p r o x i m a t e l y 1 . 5

Page 10: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

k i l o m e t r e s s o u t h o f t h e m a g n e t i c a n o m a l y .

SAMCAN p e r s o n n e l c o n c l u d e d t h e m a g n e t i c a n o m a l y

w a s c a u s e d b y a m a J o r m a s s i v e s u l p h i d e b o d y , l o c a t e d u n d e r

E a s t A r m G l a c i e r . T h e s u l p h i d e b o u l d e r s were b e l i e v e d d e -

r i v e d f r o m t h i s s o u r c e .

One m o r e SAMCAN c l a i m o f 1 2 u n i t s l a p s e d i n 1 9 8 1 .

By t h e f a l l o f 1 9 8 2 , t h e p r o p e r t y c a m e o p e n . S t . J o e r e -

s t a k e d t h e a r e a i n l a t e J a n u a r y , 1 9 8 3 . 1 I

I , ' I

S t . J o e c o n t r a c t e d Q u e s t o r S u r v e y L t d . t o c o n d u c t I 1 l

a h e l i c b p t e r , I n p u t EM a n d M a g n e t i c s u r v e y o v e r t h e p r o p e r t y .

T h e s u r v s y e n c o u n t e r e d n u m e r o u s w e a t h e , r - r e l a t e d a n d e l e c t r o - I I n i c d i f f i c u l t i e s . I t t o o k 4 3 d a y s t o c o m p l e t e a b o u t h a l f o f

t h e w o r k p l a n n e d f o r - l e s s t h a n t e n d a y s .

T h e f i r s t p h a s e o f S t . J o e ' s 1 9 8 3 w o r k c o n s i s t e d I

o f r e l o c a t i n g t h e m a g n e t i c a n o m a l y u n d e r t h e s h i f t i n g i c e ,

a n d p r o s p e c t i n g t h e b o u l d e r t r a i n s a n d o l d s h o w i n g s . T h i s

w a s c l o s e l y f o l l o w e d b y , a n d c o n t e m p o r a n e o u s w i t h , a d e e p

p e n e t r a t i n g UTEM s u r v e y o v e r t h e t a r g e t a r e a .

T h e s e c o n d p h a s e o f 1 9 8 3 w o r k c o n s i s t e d o f a n i n - I t e n s i v e h e l i c o p t e r s a m p l i n g a n d m a p p i n g p r o g r a m , p l u s a r o c k

f a c e m a p p i n g a n d s a m p l i n g p r o g r a m , w h i c h e m p l o y e d t e c h n i c a l

m o u n t a i n c l i m b i n g t e c h n i q u e s .

Work d u r i n g t h e 1 9 8 4 f i e l d s e a s o n w a s a i m e d a t

d e t e r m i n i n g s t r i k e l e n g t h , d i p a n d w i d t h o n t h e X S h o w i n g

i n p r e p a r a t i o n f o r d r i l l i n g i n 1 9 8 5 . I n a d d i t i o n , g l a c i o l -

o g i s t B r u c e B r o o s t e r , w a s e n g a g e d t o a t t e m p t t o d e t e r m i n e i f

t h e s u l p h i d e b o u l d e r s l o c a t e d a t t h e t o e o f E a s t A r m G l a c i e r

w e r e d e r i v e d f r o m b e n e a t h t h e g l a c i e r o r a l o c a t i o n n o d e x -

p o s e d , i f t h e y came f r o m a s i n g l e s o u r c e a n d f r o m w h i c h

t r i b u t a r y b a s i n s t h e y m i g h t h a v e o r i g i n a t e d .

Page 11: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

L- - -- -. - -

6. ' I

4 . SAFETY PROGRAM

Due t o t h e r u g g e d d e m a n d i n g n a t u r e o f t h e E a s t

A r m p r o p e r t y , t h e g e o l o g y crew w e r e a l l t r a i n e d a n d e x -

p e r i e n c e d m o u n t a i n c l i m b e r s . C l i m b i n g r o p e s , h a r n e s s e s ,

c r a m p o n s , i c e a x e s , h e l m e t s , a n d t e c h n i c a l m o u n t a i n c l i m b -

i n g g e a r w e r e a v a i l a b l e a n d u s e d a s n e c e s s a r y b y a l l p e r -

s o n n e l o n t h e p r o p e r t y .

E a c h crew member was s u p p l i e d w i t h e m e r g e n c y

f o o d s u p p l i e s , f i r s t , a i d k i t s , s h e l t e r s a n d g r i z z l y b e a r

s c a r i n g d e v i c e s . A l l p e r s o n n e l w e r e a s s i g n e d w o r k i n

p a i r s . E m e r g e n c y s h e l t e r a n d s u p p l i e s w e r e m a i n t a i n e d

o n t h e p r o p e r t y . I

0 One d a y w a s s p e n t s t a n d a r d i z i n g c l i m b i n g t e c h -

n i q u e s a n d r e v i e w i n g c r e v a s s e r e s c u e t e c h n i q u e .

REGIONAL GEOLOGY

T h e f o l l o w i n g s e c t i o n i s b a s e d u p o n C a m p b e l l

a n d D o d d s [ 1 9 8 3 , G 5 C Open F i l e 9 2 6 1 ; G e o l o s y T a t s h e n -

s h i n i R i v e r Map A r e a [ 1 1 4 ~ ] .

T h e p r o p e r t y a n d i t s e n v i r o n s a r e p a r t o f t h e

A l e x a n a e r T e r r a n e o f t h e I n s u l a r T e c t o n i c B e l t .

T h e A l e x a n d e r T e r r a n e i s b o u n d e d t o t h e s o u t h -

wes t b y t h e B o n d e r R a n g e s a n d H u b b a r d F a u l t s y s t e m s , a n d

t o t h e n o r t h e a s t , b y t h e Duke R i v e r a n d D e n z l i f a u l t

s y s t e m s [ ~ i ~ u r e 2 1 .

I

Page 12: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

7 . '

P t

, 8

0

Figure 2 Property Location w i th r e s p e c t t o t h e

major t e c t o n i c e lements a s de f ined by

Campbell and Dodds, 1983, G . S . C . Open

F i l e 926 Legend

B.R.F. - Border Ranges fault; F.P. = Pairweather fault

H.F.=Hubbard fault; D.R.F. = Duke River fault;

D.F.S.=Denali fault system; T.P.= Totschunda fault;

W l / ~ 2 = Wrangellia terranes

Page 13: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

T h e A l e x a n d e r T e r r a n e h a s g e n e r a l l y u n d e r g o n e

l o w g r a d e m e t a m o r p h i s m a n d i s c o m p l e x l y d e f o r m e d .

, , I t i s a p r e d o m i n a n t l y P a l e o z o i c t e r r a n e , r a n g - / I '

i n g i n a g e f r o m l a t e C a m b r i a n t o l a t e s t T r i a s s i c .

T h e f o u r l o c a l l y s i g n i f i c a n t , r e g i o n a l r o c k

t y p e s a r e : l i m e s t o n e s , a p e l i t i c a s s e m b l a g e , m a f i c '

v o l c a n i c r o c k s a n d g r a n i t i c i n t r u s i o n s .

[ ~ o l o u r s i n t h e f o l l o w i n g d e s c r i p t i o n s r e f e r

t o w e a t h e r e d s u r f a c e s o n l y . ]

T h e l i m e s t o n e s a r e t h i c k t o m a s s i v e l y b e d d e d ,

l i g h t t o medium g r e y l i m e s t o n e s a n d w e l l b e d d e d , d a r k

b l u e - g r e y l i m e s t o n e s a n d m a r b l e s , w i t h o c c a s i o n a l a s s o -

c i a t i o n o f m i n o r c a l c a r e o u s a r g i l l i t e o r p h y l l i t e . T h e

l i m e s t o n e s r a n g e i n a g e f r o m e a r l i e s t O r d o v i c i a n , S i l u r -

i a n t o D e v o n i a n , m i d - D e v o n i a n , a n d l o c a l l y l a t e s t T r i -

a s s i c . Estimates o f t h e t o t a l t h i c k n e s s o f t h e l i m e - I

s t o n e s s t a r t a t g r e a t e r t h a n 1 , 0 0 0 met res . 1 - T h e " I c e f i e l d R a n g e s P e l i t i c A s s e m b l a g e " i s a

h i g h l y v a r i a b l e g r o u p i n g o f d a r k p e l i t i c t o f i n e - g r a i n e d ,

q u a r t z - r i c h c l a g t i c r o c k s , o f u n k n o w n t h i c k n e s s . P r i m a r y

c o n s t i t u e n t r o c k t y p e s a r e : b l a c k g r a p h i t i c a r g i l l i t e ,

p h y l l i t e a n d g e n e r a l l y s i l i c e o u s , b u t l o c a l l y c a l c a r e o u s

s c h i s t , a n d d a r k q u a r t z - r i c h a r g i l l a c e o u s s i l t s t o n e . S u b - 5

o r d i n a t e t o m i n o r r o c k t y p e s a r e t h i n b e d d e d m i c a q u a r t z -

i t e , a n d mica q u a r t z - r i c h s a n d s t o n e - s i l t s t o n e . R a r e r t o

o c c a s i o n a l r o c k t y p e s a r e : d a r k b l u e - g r e y , p l a t y l i m e -

s t o n e o r m a r b l e , t h i n a n d m o r e t h i c k l y b e d d e d g r e y l i m e -

s t o n e o r m a r b l e .

Page 14: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

T h e a s s e m b l a g e may b e l a r g e l y U p p e r P a l e o z o i c

t o U p p e r T r i a s s i c , b u t i t i n c l u d e s m i d - O r d o v i c i a n t o E a r l y

S i l u r i a n , S i l u r i a n t o D e v o n i a n , m i d - D e v o n i a n , C a r b o n i f e r -

o u s t o l o w e r P e r m i a n , a n d l a t e s t T r i a s s i c r o c k s .

T h e r o c k s o f t h i s p e l i t i c a s s e m b l t i g e a r e v e r y

c o m p l e x l y d e f o r m e d , w i t h r e g i o n a l m e t a m o r p h i s m g r a d i n g

c o m m o n l y t o v e r y l o w g r a d e , j u s t l e s s t h a n g r e e n s c h i s t I f a c i e s , b u t o c c a s i o n a l l y u p t o m i d - g r e e n s c h i s t f a c i e s . t

I

E a r l y M e s o z o i c [ a n d / o r U p p e r ~ a l e o z o i c ] mafic I I 1

v o l c a n i c [ a n d s e d i m e n t a r y ] r o c k s a r e , v e r y s i g n i f i c a n t t o I i

l o c a l e x p l o r a t i o n . T h e y h o s t t h e Windy C r a g g y d e p o s i t . 1

T h e p r i n c i p a l v o l c a n i c r o c k t y p e s a r e d a r k I

' g r e e n i s h - g r e y b a s a l t t o a n d e s i t e p i l l o w l a v a s a n d f l o w s .

P r i n c i p a l i n t e r b e d d e d r o c k s a r e l i m e s t o n e , a r g i l l i t e a n d

s i l t s t o n e . T h ~ r e a r e a l s o b a s i c i n t r u s i v e s . M i n o r r o c k

t y p e s i n c l u d e g r e e n s t o n e , g r e y w a c k e , d a c i t e , a n d a c i d a n d

b a s i c p y r o c l a s t i c s . T h e r e i s a l s o r a r e g y p s u m .

i I -

Limy b e d s i n t h e s t r a t i g r a p h i c h a n g i n g w a l l o f I

t h e Windy C r a g g y d e p o s i t h a v e c o n s i s t e n t l y y i e l d e d N o r i a n

[ u p p e r ~ r i a s s i c ] c o n o d o n t s . I

T h e r o c k s o f t h i s u n i t may a l l b e U p p e r T r i a s s i c , I

1 o r o l d e r . D U E t o p o s s i b l e c o m p l e x s t r u c t u r a l a n d / o r u n c o n -

f o r m a b l e r e l a t i o n s h i p s , t h e u n i t may b e , i n p a r t , U p p e r

P a l e o z o i c o r e v e n o l d e r .

T h e r o c k s of t h i s u n i t a r e m o d e r a t e l y t o com-

p l e x l y d e f o r m e d . T h e y h a v e u n d e r g o n e v e r y l o w g r a d e t o

g r e e n s c h i s t f a c i e s m e t a m o r p h i s m .

I

Page 15: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …
Page 16: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

FIGURE 3 GEOLOGY OF THE TATSHENSHINI RIVER MAP AREA (114P) (from G.S.C. Open File 926)

ROCK UNITS: JKg - "St. Elias intrusionsi' Pv - Early Mesozoic Volcanic &

Sedimentary Sequences Psp - Icefield Ranges Pelitic

Assemblages

) Limestones ODcs

Kllometrer SCALE 1:125,000 I I . -

5 0 . 5

Page 17: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

EAST ARM PROPERTY

f) 4 I;

' I '

Cd

WINDY - CRAGGY B A 5b

2- a I -2 I - -4 / . -

I - i /v. 3 / 1 ~ 1 I I km

I km

0 1 - I

LEGEND

XlRASSlC - CRETACEOUf ORDOVICIAN - DEVONIAN

II GRANITIC lNTRUSlONS 1 LIMESTONI. L l M l MUDSTONE. CALCARINITE MARBLE MINOR

ARGILLITE

I I IASSIC O n YOUNGER

1 DlORlTlC INTRUSIONS 7. - DIORITE-VOLCANIC COMPLEX 1O - DIORITI. OUARTZ OlORllE

LEGEND I LATE TRIASSIC A N 0 I71 YDUHCER

BEDDING

6 MAFIC PILLOW LAVA )a - AOGLOMERATI TOPS INOIYN. ASSUMED C Y

y, l l M V SILTSTONI. AIlGILLITI. 1UI F. FLOWS MlNOll LIMLSTONC

y MAFlC PILLOIY LAVA. M I N ~ R LlMV ARGILLITE. CHERT FOLIATION . . Z

lELSlC IILLCW LAVA. PORPHYRITIC FLOWS 2 AMVGOALOIOAL FLOWS MlNOR UMV ARGILLITE. LIMESTONE FAULT

i - LATE PALEOZOIC I71 T o LATE T n I A U I S SAMPLE SITE ITABLE 11 A n

2 LlMV ARGILLITE. SILISTONE MINOR TUFF GOSSAN . . !lmma

Figure 4 Preliminary Geology of the Alsek-Tatshenshini Map Area ( a f t e r , D . MacIntrye; BCMEMPR Paper 1984-1 p . 1 7 4 f i g . 6 7 )

Page 18: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

0 OBJECTIVES 1 9 8 4 PROGRAM

A l i m i t e d work p r o g r a m w a s c a r r i e d o u t o n t h e

E a s t A r m P r o p e r t y d u r i n g t h e 1 9 8 4 f i e l d s e a s o n . M o s t

o f t h e w o r k w a s d i r e c t e d a t ' t h e X - S h o w i n g , w h ~ r e h i g h

g o l d v a l u e s h a d b e e n d e t e c t e d i n g r a b s a m p l e s t a k e n d u r -

i n g t h e 1 9 8 3 f i e l d p r o g r a m . S p e c i f i c g o a l s were a s f o l -

l o w s :

i , a 11 D e t e r m i n e maximum p o s s i b l e s t r i k e l e n g t h o f t h i s

' / /

g o l d - b e a r i n g m a s s i v e s u l p h i d e s e a m u s i n g g e o l o g y

[ m a p p i n g ] g e o p h y s i c s [ V L F - E M a n d M a g n e t i c s u r v e y s ] .

2 1 D e t e r m i n e a s much s t r u c t u r a l i n f o r m a t i o n a b o u t t h e

s h o w i n g a s p o s s i b l e [ d i p , l o c a l f o l d s o r f a u l t s , e t c . ]

J

3 1 P r o s p e c t f o r o t h e r s i m i l a r o c c u r r e n c e s i n t h e immed-

0 i a t e v i c i n i t y [ p a r a l l e l o r e n e c h e l o n z o n e s ? ] .

4 1 T r a c e t h e z o n e g e o p h y s i c a l l y t o i t s l i m i t u s i n g a

d e t a i l g r i d h a v l n g a 1 0 m l i n e s p a c i n g .

-

5 1 L o c a t e p o s s i b l e d r i l l s e t u p s t o t e s t t h e z o n e o n

t h i s s t e e p h i l l s i d e . I A g r i d w a s e s t a b l i s h e d u s i n g t h e s h o w i n g a s

t h e o r i g i n , t o a s s i s t i n t h i s p r o g r a m .

i

I n a d d i t i o n , g l a c i a l g e o l o g i s t , B r u c e B r o s t e r ,

[ o f t h e G e o l o g y D e p a r t m e n t a t U.B.C.] w a s e n g a g e d t o

c o n s i d e r p o s s i b l e m e a n s t h a t m i g h t b e e m p l o y e d . i n t r a c -

i n g t h e m a s s i v e s u l p h i d e b o u l d e r s f o u n d a t t h e T o e o f

E a s t A r m G l a c i e r , b a c k t o s o u r c e . S p e c i f i c q u e s t i o n s

t o b e a n s w e r e d w e r e a s f o l l o w s :

,

Page 19: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

1 - - ---- -- - - - . - - -- - - -

1 4 .

11 Were t h e b o u l d e r s d e r i v e d f r o m a s o u r c e b e n e a t h t h e

g l a c i e r o r f r o m a l o c a t i o n now e x p o s e d , a b o v e t h e

g l a c i e r ?

Page 20: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

LOGISTICS

Dezadeash Lodge, l o c a t e d a t K m 202 o n t h e

Page 21: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

0 W O R K PROGRAM - X-SHOWING

1. G r i d P r e p a r a t i o n

A g r i d w a s e s t a b l i s h e d u s i n g t h e m a s s i v e s u l p h i d e

o u t c r o p a s t h e g r i d o r i g i n . T h e b a s e l i n e w a s o r i e n t e d

a l o n g t h e s h o w i n g . L i n e s were e s t a b l i s h e d a t 1 0 m i n t e r -

v a l s a n d m a r k e d a t 1 0 m s t a t i o n s . G e o p h y s i c a l s u r v m e y s

were c o n d u c t e d a l o n g t h e g r i d l i n e s a n d t h e g e o l o g i c a l map-

p i n g w a s t i e d i n t o t h e g r i d . T h e t e r r a i n i s s t e e p [ a v e r -

a g i n g a b o u t 45' a n d a l l s u r v e y s t o o k much l o n g e r t h a n t h e y

w o u l d h a v e i n l e s s r u G g e d a r e a s . A t o t a l o f 1 . 8 l i n e k i l o -

meters o f g r i d were e s t a b l i s h e d .

2 . M a q n e t i c S u r v e y

An E D A I n s t r u m e n t s PPM-350 p r o t o n p r e c i s i o n mag-

n e t o m e t e r w i t h a s e n s i t i v i t y o f 0 . 1 gammas a n d a n E D A I n -

s t r u m e n t s PPM-400 p r o t o n p r e c i s i o n b a s e s t a t i o n m a g n e t o -

m e t e r , a l s o w i t h a s e n s i t i v i t y o f 0 . 1 g a m m a s , were t o b e

u s e d i n c a r r y i n g o u t t h e m a g n e t i c s u r v e y . A f a l l i n t h i s

r u g g e d t e r r a i n c a u s e d t h e PPM-350 m a g n e t o m e t e r t o b e c o m e

i n o p e r a t i v e o n o n e o f t h e f i r s t l i n e s s u r v e y e d . T h e s u r v e y

w a s c o m p l e t e d u s i n g t h e PPM-400 b a s e s t a t i o n a s a p o r t a b l e

m a g n e t o m e t e r . T h e l o o p i n g m e t h o d w a s u s e d t o c o r r e c t f o r

d i u r n a l v a r i a t i o n . T h e m a g n e t i c s u r v e y i s c o m p r i s e d o f

2 2 9 s t a t i o n s .

3 . VLF-EM S u r v e y

A P h o e n i x G e o p h y s i c s L t d . VLF-2 e l e c t r o m a g n e t i c

u n i t w a s u s e d i n c a r r y i n g o u t t h e v e r y l o w f r e q u e n c y e l e c -

t r o m a g n e t i c s u r v e y s . C o m p l e t e s p e c i f i c a t i o n s ' f o r t h i s

i n s t r u m e n t a r e i n c l u d e d o n t h e a t t a c h e d specification s h e e t .

T h i s s u r v e y w a s c o n d u c t e d u s i n g t r a n s m i t t e r s t a t i o n s l o c a t e d

a t S e a t t l e . W a s h i n g t o n a n d L a u l u a l e i , H a w a i i . A t o t a l o f

0 1 5 2 s t a t i o n s c o m p r i s e s e a c h VLF s u r v e y .

\

I

Page 22: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

ipecif i Ations arameters Measured : Orientation and magnitude of the major and minor axes of the

ellipse of polarizatidn. I Ir)ncy Selection, Front Panel : Dual channel. front panel selectabb (Fl or F2) each with

independent precision 10-turn dial gain control. I

requency Selection, Internal : F l and F2 can be selecnd by internal switches within the All of theestablished stations may

range 14.0 to 29.9 kHz in 100 Hz increments. be selected. or olternolively. o local VLF tronsmilter moy be used . .-

Ietectlon And Filtering : Superheterodyne detection ond digital filtering provide o which tronrmitr ot any frequency '

much norrower bandwidth and thus greater rejection of in the range 14.0 to 29.9 kHz.

interfering ctotionc and 60 cycle nolse than conventional , b receivers. VLF Station Frequency

(kHz) Aeter Display : 2 ranges: 0 to 300 or 0 to 1000. Background is typically set at

100. Meter is olso used as dip angle null indicator and battery Bordeaux, France 15.1 Odessa (Black Sea) 15.6 test. . . . Rugby, U.K. 16.0

: Crystal speaker. 2500 Hz used as null indicator. Moscow, U.S.S.R. 17.1 Audio Yosamoi. Jopan 1 7 .*4

: +_90°, +O.SO resolution. Normol locking, push button' Hegaland. Norwoy 17.6 Clinometer .2... = c*. . . ... Cutler, Maine 17.0 releose.

Seottle, Washington z'?- 6 M : One standard 9v transistor radio battery. Averoge life Malobar, Jovo 19.0 Battery

expectancy - 1 to 3 months (bottery droin is 3 mA) Oxford, U.K. 19.6 Poris, France 20.7

: -40' to, + 60' C.. Annopolis. Morylond 21.4 remperature R O " ~ ~ . . . .. . , Northwest Cape. Australia 22.3

: 0 x 2 2 x 1 4 c m ( 3 x 9 x ~ i n c h e s ) . Laulualei, Howoii 23.4 Dimensions , Buenos Aires, Argentino 23.6

: ,850 grams (1.9 pounds). Rome, ltoly 27.2 Weight ' '

% ~ s ~ ~ t b ~ l o w illustrate the need for using two The results obtained using Cutler, Maine reveal a more

orthogonal stations when the strike of the prospective prominent anomaly, but the best-response was obtained

cbnductor i s not well-known. The dip angle and amplitude using Annapolis, Maryland since the station lies almost

data measured using station NLK in Seattle, Washington, due south and the transmitted electromagnetic field i s

show only a very weak anomaly associated with the two thus maximum-coupled with the North-South trending

conductive sulphide zones at Cavendish, Ontario. ' conductors.

Page 23: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …
Page 24: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

-- -- -- --

1 8 .

0 RESULTS A N D CONCLUSIONS

M a q n e t i c S u r v e y

T h e r e s u l t s o f t h e m a g n e t i c s u r v e y a r e d i s p l a y e d

i n F i g u r e 5 . A m a g n e t i c a n o m a l y o f s o m e 6 0 0 gammas i s I

I

a p p a r e n t o v e r t h e known s h o w i n g l o c a t e d a t t h e g r i d o r i g i n . I

I I

I A m a g n e t i c l i n e a r e x i s t s m o r e o r l e s s a l o n g t h e b a s e l i n e 4

f o r a p p r o x i m a t e l y 5 0 m e t r e s . T h e m a g n e t i c r e s p o n s e i s

p r e s u m a b l y d u e t o t h e p y r r h o t i t e o b s e r v e d a t t h e X-Showing

[ g r i d o r i g i n ] . T h e r e i s t h e r e f o r e r e a s o n t o b e l i e v e t h a t

t h e m a s s i v e s u l p h i d e z o n e may c o n t i n u e f o r a t l e a s t 5 0

metres.

A s e c o n d m a g n e t i c l i n e a r i s e v i d e n t f r o m L5N a t

90E t o L8N a t 80E. T h i s m a g n e t i c h i g h i s s t i l l o p e n t o t h e

n o r t h . I t s s i g n i f i c a n c e i s u n k n o w n a t p r e s e n t . I I

0 VLF-EM S u r v e v s '

T h e r e s u l t s o f t h e VLF-EM S u r v e y s a r e i n c l u d e d

a s F i g u r e s 6 a n d 7 .

No c r o s s o v e r s were o b s e r v e d o n e i t h e r o f t h e VLF-, - i E M s u r v e y s , e v e n i n t h e a r e a o f known m a s s i v e s u l p h i d e min-

e r a l i z a t i o n . B o t h s u r v e y s d i d s h o w a s t . r o n g b a c k g r o u n d d i p 1 t o w a r d t h e s t e e p h i l l s i d e w h i c h i s p r o b a b l y , a t l e a s t i n I

p a r t , d u e t o t h e r u g g e d t o p o g r a p h y . A f e w v e r y weak i n f l e c - I I

t i o n s i n t h e d i p a n g l e c u r v e s a r e e v i d e n t b u t n o d e f i n i t e I

c o n d u c t o r s w e r e l o c a t e d w i t h i n t h e s u r v e y a r e a .

G e o l o a i c a l S u r v e y

T h e r e s u l t s o f t h e g r i d m a p p l n g a r e d i s p l a y e d i n

F i g u r e 8 . T h e X-Showing m a s s i v e s u l p h i d e s e a m d i p s t o t h e

w e s t a n d i s h o s t e d b y a b l a c k , l i m y a r g i l l i t e , w h i c h i s i t -

s e l f , e n c a s e d i n d a c i t e .

Page 25: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

1 9 .

D e t a i l e d g e o l o g y a t t h e X-Showing i s shown on

F i g u r e s 1 0 a n d 11. A l s o shown a r e t h e a s s a y v a l u e s f o r I

b o t h g r a b a n d s y s t e m a t i c s a m p l i n g on t h e m a s s i v e s u l p h i d e

s e a m a n d i n t h e r u s t y , w e a t h e r e d m a t e r i a l on s t r i k e w i t h

t h e s u l p h i d e seam t o t h e s o u t h . The m o s t n o r t h e r n t r e n c h

[ s t i l l s o u t h o f t h e m a s s i v e s u l p h i d e s e a m ] r e t u r n e d 0 . 4 5 8

o z / t o n Au a n d 0 . 9 5 o z / t o n Ag o v e r 1 . 5 metres . A s e c o n d

t r e n c h a p p r o x i m a t e l y 2 m f u r t h e r s o u t h r e t u r n e d 0 .784 o z /

t o n Au a n d 1 . 2 4 o z / t o n Ag o v e r 1 . 4 metres . A t h i r d t r e n c h ,

l o c a t e d a p p r o x i m a t e l y 1 . 5 metres s o u t h o f t h e p r e v i o u s l y

m e n t i o n e d t r e n c h , r e t u r n e d 0 . 2 0 7 o z / t o n Au a n d 1 . 4 6 o z / t o n

Ag o v e r 1 . 0 m . The b e s t s i n g l e a s s a y r e p r e s e n t i n g a 3 0 c m

w i d t h was 2 .366 o z / t o n Au a n d 2 . 3 3 o z / t o n Ag. S i g n i f i c a n t

g o l d a n d s i l v e r v a l u e s h e v e , t o d a t e , b e e n t r a c e d o v e r a

9 m e t r e s t r i k e l e n g t h .

Mike O r c h a r d , o f t h e GSC, e x t r a c t e d a n d i d e n t i f i e d

0 c o n o d o n t f o s s i l s f r o m s p e c i m e n s t a k e n n e a r t h e X-Showing by

S t . J o e p e r s o n n e l d u r i n g t h e 1 9 8 3 f i e l d s e a s o n . An e a r l i e s t

N o r i a n 2-3 a g e [upper T r i a s s i c ] was d e t e r m i n e d . T h i s i s

t h e s ame a g e a s r e p o r t e d f o r t h e Windy C r a g g y d e p o s i t [ ~ a c -

I n t y r e 1 9 8 3 1 .

The e c o n o m i c s i g n i f i c a n c e o f t h e X-Showing h a s n o t

y e t b e e n d e t e r m i n e d . F u r t h e r work i s r e q u i r e d .

Page 26: GEOLOGICAL, GEOCHEMICAL AND GEOPHYSICAL REPORT …

- .

2 0 .

W O R K PROGRAM - GLACIAL STUDY

B r o s t e r d e v o t e d s e v e n d a y s t o t h e p r o j e c t , t w o

w e r e t r a v e l d a y s , o n e w a s a f i e l d o f f i c e d a y [ h e l i c o p t e r

u n a v a i l a b l e 1 a n d f o u r w e r e d e v o t e d t o f i e l d w o r k . T h r e e

d a y s w e r e d e v o t e d t o e x a m i n i n g t h e t o e o f E a s t A r m G l a c i e r

f o r t h e o c c u r r e n c e o f s u l p h i d e b o u l d e r s o n t h e s u r f a c e o f

t h e e n d m o r a i n e , i n m o u l i n s , a n d e m b e d d e d w i t h i n t h e i c e

a l o n g e x p o s e d t h r u s t p l a n e s . One d a y w a s s p e n t e x a m i n i n g

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

B r o s t e r ' s O b s e r v a t i o n s a n d C o n c l u s i o n s were a s f o l l o w s :

1 1 Two t y p e s o f m i n e r a l i z e d f l o a t a r e p r e s e n t i n t h e o u t -

w a s h d e p o s i t s a t t h e t o e o f E a s t A r m G l a c i e r .

2 1 T h e p r e s e n t s t u d y f o c u s e d o n t h e m a s s i v e s u l p h i d e f l o a t .

3 1 T h e m a s s i v e s u l p h i d e f l o a t w a s f o u n d o n l y i n a s s o c i a t i o n

w i t h o u t w a s h d e p o s i t s .

4 1 O t h e r m i n e r a l i z e d f l o a t o c c u r s i n b o t h t h e o u t w a s h c h a n -

n e l a n d o n p o r t i o n s o f t h e t o e o f E a s t A r m G l a c i e r t h a t

o r i g i n a t e f r o m t h e a r e a b e t w e e n P a m p e r o R i d g e a n d A e o l i a n

P a l i s a d e [see f r o n t i s p i e c e ] .

5 1 O t h e r m i n e r a l i z e d f l o a t may o r i g i n a t e f r o m m o r e t h a n a

s i n g l e s o u r c e . 8 t

6 1 M a s s i v e s u l p h i d e f l o a t i s p r e s e n t l y b e i n g d e p o s i t e d b y

t h e a c t i v e m e l t w a t e r s y s t e m , e x i t i n g a t t h e t o e o f E a s t

A r m G l a c i e r .

71 C l a s t s o f m a s s i v e s u l p h i d e f l o a t a r e f o u n d a l o n g t h e

o u t w a s h c h a n n e l up t o t h e m o u t h o f t h e e x i t t u n n e l a t

t h e t o e o f t h e g l a c i e r .

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L - -- -- --- - - - - - - pp- - -

2 1 .

8 1 T h e c l a s t s i n t h i s m e l t w a t e r s y s t e m p r e s e n t l y o r i g i n -

a t e f r o m t h r e e s o u r c e s .

a ] F r o m t h e s u r f a c e o f t h e g l a c i e r down a c t i v e m o u l i n s

t o t h e e n g l a c i a l a n d s u b g l a c i a l m e l t w a t e r s y s t e m .

b ] F r o m s i d e f e e d e r s a l o n g t h e l a t e r a l m o r a i n e s a s a

r e s u l t o f d r a i n a g e a n d m e l t i n g i n t r i b u t a r y b a s i n s .

c ] By r e l e a s e f r o m i c e d u e t o a c t i v e m e l t i n g o f p o r -

t i o n s o f t h e p e r i m e t e r o f t h e e n g l a c i a l a n d s u b -

g l a c i a l c h a n n e l .

9 1 No new o c c u r r e n c e s o f m a s s i v e s u l p h i d e f l o a t w e r e f o u n d

a s a r e s u l t o f e x a m i n a t i o n s o f t h e m a j o r s u r f a c e m e l t -

w a t e r s t r e a m s , l a r g e m o u l i n s , s i d e f e e d e r s a n d e x p o s e d

t h r u s t p l a n e s .

1 0 1 M a s s i v e s u l p h i d e f l o a t i s p r o b a b l y b e i n g r e l e a s e d f r o m

t h e i c e b y m e l t i n g a l o n g p o r t i o n s o f t h e p r e s e n t e n g l a c -

i a l o r s u b g l a c i a l m e l t w a t e r t u n n e l s y s t e m .

111 E n g l a c i a l o r s u b g l a c i a l t r a n s p o r t i s a l s o i n d i c a t e d b y

s t r i a e o n b o u l d e r s o f m a s s i v e s u l p h i d e l o c a t e d s e v e r a l

h u n d r e d m e t r e s d o w n s t r e a m o f t h e t o e o f E a s t A r m G l a c i e r .

B r o s t e r v e n t u r e d t h e o p i n i o n t h a t t h e m a s s i v e

s u l p h i d e b o u l d e r s a r e b e i n g d e r i v e d f r o m t h e c e n t r a l p a r t

o f t h e g l a c i e r . T h i s w a s b a s e d o n a n e x a m i n a t i o n o f t h e

c l a s t l i t h o l o g i e s i n t h e y o u n g e r m e l t w a t e r d e p o s i t s w h i c h

h a v e a b i a s t o w a r d l i t h o l o g i e s m o r e p r e v a l e n t i n t h e c e n -

t r a l p a r t s o f E a s t A r m G l a c i e r .

P r e v i o u s w o r k e r s i n t h e a r e a h a v e q u e s t i o n s a s

t o w h e t h e r t h e m a s s i v e s u l p h i d e f l o a t c o u l d h a v e come f r o m

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t h e W i n d y C r a g g y D e p o s i t . B r o s t e r b e l i e v e s t h a t u p t o

a b o u t 8 , 0 0 0 y e a r s a g o t h e i c e may h a v e b e e n t h i c k e n o u g h

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RECOMMENDATIONS

11 Run d e t a i l e d h o r i z o n t a l l o o p e l e c t r o m a g n e t i c [ p r e f e r -

a b l y Max-Min] s u r v e y s i n t h e v i c i n i t y o f t h e X-Showing

i n a n a t t e m p t t o e x t e n d t h e known s t r i k e l e n g t h o f t h e '

s h o w i n g . V a r i o u s f r e q u ~ n c i e s s h o u l d b e t r i e d o v e r t h e

known s h o w i n g . T h e m o s t r e s p o n s i v e a n d l o w e s t f r e q u e -

n c i e s s h o u l d b e u s e d o n t h e s u r v e y a s t h e l o w e s t f r e -

q u e n c y d a t a c a n b e u s e d t o r e m o v e s o m e o f t h e t o p o g r a -

p h i c e f f e c t w h i c h w i l l s u r e l y b e p r e s e n t i n t h i s t e r r a i n .

V a r i o u s c o i l s e p a r a t i o n s may b e u s e d b u t , i n g e n e r a l ,

m o r e d e t a i l w i l l b e o b t a i n e d f r o m t h e c l o s e s t s e p a k a t i o n

w h i c h p r o d u c e s a r e a s o n a b l e m a g n i t u d e a n o m a l y .

2 1 Run a d e t a i l e d [ 5 metre s p a c i n g j m a g n e t i c s u r v e y o v e r

a l l l i n e s s u r v e y e d b y t h e h o r i z o n t a l l o o p e l e c t r o m a g -

n e t i c m e t h o d . T h i s may h e l p i n i n t e r p r e t i n g t h e e l e c t r o -

m a g n e t i c d a t a a n d may h e l p i n i n t e r p r e t i n g s t r u c t u r e .

3 1 Look f o r a n d n o t e t h e l o c a t i o n o f p o s s i b l e d r i l l s i t e s

w h i l e c o n d u c t i n g t h e s u r v e y s .

4 1 D r i l l t h e s h d w i n g w i t h a minimum o f f i v e s h o r t h o l e s

[ l e s s t h a n 1 0 0 m ] a n d d r i l l t e s t a n y a p p a r e n t e x t e n -

s i o n s a f t h e z o n e a s r e v e a l e d b y t h e g e o p h y s i c a l s u r -

v e y s .

5 1 T h e m a r g i n s o f t h e g l a c i e r s h o u l d b e p r o s p e c t e d t o s ee

i f a n y m a s s i v e s u l p h i d e m a t e r i a l c a n b e s e e n e n t e r i n g

t h e g l a c i a l s y s t e m . I f n o s u l p h i d e s c a n b e f o u n d o n

t h e l a t e r a l m o r a i n e s , a n u n d e r i c e s o u r c e f o r t h e

b o u l d e r s m u s t b e e n v i s a g e d . T h e m a g n e t i c a n o m a l y

u n d e r t h e c e n t r a l p o r t i o n o f E a s t A r m G l a c i e r s h o u l d

t h e n b e d r i l l t e s t e d t o see if t h e m a g n e t i c a n o m a l y i s

c a u s e d b y m a s s i v e s u l p h i d e m i n e r a l i z a t i o n .

0

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Is Chemex Labs Ltd. ,

2 1 2 Brooksbank Ave. N o r t h Vancouver. B.C. Canada V7J 2C1

Analytical Chemists Geochemists Registered Assayers Telephone:(604) 984-0221 Telex: 043.52597 1- ~ ~ E R ~ ~ F ~ c ~ ~ ~ UF I ___ . _ _ _ _- - _ - .

---- TO : ST. JOE CAKADA INC. -CERT. # : ~ 8 4 1'091e-001-A

INVOICE # : I 8 4 1 6 9 1 8 410 - 5 5 3 GZANVILLE ST* C A f f : 25-CCT-84

VANCOUVER, Sac* P.C. I# : NONE . V6c 1x6

ATTN: D e KENNEDY & P o WARkICK, Sarro l e P r e p Cu Ag FA Au FA

code ' 111

d e s c r i p t i o n lo oz /T . o z / T !

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