822899 CORPORATION FALCONBRIDGE COPPER MEMORANDUM

DATE: May 21, 1985

A A . J . Davidson TO:

COPIES A M. J . Knuckey, D. H. Watkins COPIES TO: J ' *

DE L D. PirLe FROM:

S U J E T C T Rea Gold Dril l ing Summary and Proposal for Follow Up

During February and March, 1985, f ive (5) more holes were dri l led on the Rea

Gold property. These notes, RG 33, 34, 35, 36 and 37, are located on the

accompanying compilation map. Each provided i t ' s own l i t t l e surprises which

may be summarized as fol lows:

R G - 3 3 (L99+50, 3+90N)

- revealed the considerable thickness of what we have termed the

'Lower cherty unit '

- Max Min anomaly was graphitic argi l l i te within the chert

- down dip extension of the Rea Horizon was present, but dead

R G - 3 4 (L104, 1+90N)

- Rea Horizon s t i l l present, albeit somewhat further north than

anticipated, but only very weakly mineralized

- Max Min anomaly was graphitic arg i l l i te i n the stratiLgraphic

hanging w a l l

R G - 3 5 (L91, 5+83N)

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

pyroclastics than anticipated and fa i led to intersect the Rea

Horizon at depth

- intersected a mineralized chert horizon higher i n the hole which

returned 0.39% Cu, 1.14% Pb, 5.14% Zn , 30.9 g/T Ag and 0.2 g/T Au

over 15cm

R G - 3 6 (L91, 3+50N)

- encountered the horizon discovered i n R G - 3 5 up dip, but i t was only

weakly mineralized

RG-37 (L1Q6+75, 9+90N)

- encountered an i d e n t i c a l sequence of rocks to those i n the original,

discovery area and returned 0.38% Cu, 0.92% Pb, 1.59% Zn, 0.04% A s ,

168 g/T Ag and 0.3 g/T A u over 2.7m including 0.72% Cu, 2.74% Pb,

3.97% Zn, 0.05% As, 607 g/T Ag and 0.7 g/T Au over 0.5m.

Sections for 33, 35/36 and 37 are appended (Figs. 1, 2 and 3).

In addition, holes R G - 3 3 , 35, 36 and 37, along with R G - 3 0 from the

previous d r i l l program, were PEM surveyed. Plots are appended. Results may

be summarized as fol lows:

R G - 3 0

3 channel, i n hole on a l l loops. Off hole response i n l a t e r channels on

W loop.

R G - 3 3

Optimum response off of South loop. Strong i n hole/off hole response

corresponding to graphitic argi l l i te at 157m. 4 channel, off hole

response at 275m. Weak off hole (3 ch) at Rea Horizon (390m)

R G - 3 5 , 36

Probably just a weak 'sheet' response corresponding to the upper

horizon intersected at approx. 390m. Distinctly stronger response

from the west loop on R G - 3 5 .

R G - 3 7

Appears to be a conductive overburden ef fect at the top, but building

up to an offhole below the hole?

Based on these results the fol lowing follow up holes are proposed:

P1_(L105, 9+20N, - 7 0 ° , 100m)

This will , intersect the R G - 3 7 zone 175m along strike to the

southeast. A t t l i is point the Max Min anomaly has a better conductance and i n

phase/quad, rat io than at 37 (see F i g . 4). Also the f oo twa l l soils are

anomalous in Pb and As and the foot wall basalts show Na depletion and Zn

enrichment.

_P2 (L106, 75, 10+40N, - 8 9 ° , 165m)

This will test down dip on the RG-37 zone which returned 0.38% Cu,

0.92% Pb, 1.59% Zn, 168 g/T Ag and 0.3 g/T Au over 2.7m.

JP3 (L108, 6+30N, - 6 0 ° , 125m)

This hole will test a coincident Max Min anomaly and strong Zn in soil,

response on the lower chert horizon. The fact that this anomaly is Zn only is

probably due to the depth of overburden and Zn mobility in the surflcial.

environment. The Max Min response is shown on Fig. 4.

P4 (L99, 3+10N, -89 ° , 250m)

This hole will test an off hole PEM response in RG-33 with coincident

highly anomalous base and precious metals at what appears to be a brand new

horizon within the main mineralized area (see Figs 1 and 5). PEM responses

indicate that the source of the anomaly is up dip from 33. Corroborating

evidence is available from PEM data for RG-30 and RG-27 (Fig.6) (surveyed

1984), both of which give off hole responses which appear to be too low in the

stratigraphy to be the Rea horizon. A check of holes which intersected this

postulated new horizon near surface confirms the presence of thin cherty

horizons and particularly strong serLcitLc alteration.

P5 (L94, 3+80N, -60° , 125m)

RG-35 intersected a mineralized horizon which returned 0.39% Cu,

1.14% Pb, 5.14% Zn, 30.9 g/T Ag and 0.2 g/T Au over 15cm. PEM responses

from tills hole suggest a conductive sheet most strongly mineralized to the

west of the intersection. No Max Min data is available for this area, but VLF

data (Fig. 7) shows the horizon quite well as a fairly weak conductor. On line

94 a single line strong VLF response (fraser filter value = 78) occurs on this

trend. Down slope from this response soil, anomalies in Ag, Zn and Cu are

present. P5 is designed to test this anomaly.

This 765m program i s the bare minimum required to test the

priority targets which have presented themselves and to achieve our aim

eliminating the most obvious targets from the Rea Gold property.

Estimated all. i n cost i s $61,200. Dril l ing i s planned for mid-June.

Ian D. Pirie

IDP/ik

\

RG33 1500 m

5 *7o py ( occ in b t d s )

highly var iable f o l n S \ l

5 *7.py ( diss 1 d 8 veiny )

— x S T r - green mica 5 "7. py, tr sp

" ' 3 py"| I ser. r -f- mfnor cht broken 8 gouged

ser t cht bx 5 - f O V . py 3*7» tr gp J _ J g r e y - black chert

ser t g r e y - b l a c k c h e r t . t h i n p y c beds

5 - I O V o py

10-15 7 . py

mixed cht S ser. t

graphit ic cher ty arg i i I ite +• f au It gouge

ser. i , minor cht

IN HOLE (MAX MIN CONDUCTOR )

graphit ic a r g i l l i t e , m i n o r t, cht (h igh ly contorted 8 gouged )

maf. pyros.

wk ser - chl f

in ter f low chert a

A-5 CH OFF HOL E , UP DIP black cher ty arg

— 155, 1 6 5 0 , 1 5 5 0 , 1300 m.t., minor chert 9

secondary qtz.

m pyros and f lows

0 . 7 , O.I /

8 0 0 , 4 5 5 0 , 5 0 0 0 , 4 9 0 0 1.4 , 0 .2

. 5

.5

m g f lows

minor chl p y r c exh

t +• cht

Cu,Pb,Zn,A8 PPm / U e 8

Ag.Au g /T /

maf t + arg \

int t

4 4 0 . 9 m 5 0 100 m

I s 2 0 0 0

CORPORATION FALCONBRIDGE COPPER L 99+50

FIGURE 1

RG35 *'

mixed cht muddy t

ser.t + cht

. f r a g 1

o c c . altered zones)

1520m

mafic f rag

I blocky,qtz-cc veined Twin Mtn.J py,gn,sp,cp(mal) in Min. Zone [ v e i n s , some bleaching

( maf. f r o g '

maf. f I. a f rog shear z o n e

V* py w sp, gn ,cp )

NO PEM BELOW 742m ( hole blocked J

Weakly . Mineral ized horizon

2 0 V . p y . t r s p , c p , g n

2 0 0 m

^ 5 2 ^ 4 M T ^ % ^ H o r i U !

\ CORPORATION FALCONBRIDGE COPPER L 91+00 FIGURE 2

RG37

10 20 30

11 5 0 0 m

CORPORATION FALCONBRIDGE COPPER L 106+75

FIGURE 3

\

RG 33 (30/27) Off-hole response follow up.