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File Created: 30-Jul-1986 by Larry Jones (LDJ)
Last Edit:  27-Feb-1989 by Laura L. Duffett (LLD)

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NMI 103G9 Cu1
Name GREAT WEST, BAN, MARBLE BAY, EDD, BAN 1-2 Mining Division Skeena
BCGS Map 103G059
Status Showing NTS Map 103G09W
Latitude 053º 34' 26'' UTM 09 (NAD 83)
Longitude 130º 16' 26'' Northing 5936869
Easting 415649
Commodities Copper, Molybdenum, Silver Deposit Types K01 : Cu skarn
K07 : Mo skarn
Tectonic Belt Coast Crystalline Terrane Alexander, Plutonic Rocks
Capsule Geology

A narrow belt of northwest striking Permian(?) or older meta- sediments is surrounded by younger quartz diorite, granodiorite and quartz monzonite of the Coast Plutonic Complex. The metasediments consist of laminated micaceous quartzite and crystalline limestone, epidote-chlorite skarn, schist and slate.

Mineralized skarn occurs near shore at the contact of quartz diorite and limestone/marble. Mineralization consists of dissemina- tions, blebs and fracture fillings of molybdenite, chalcopyrite, pyrite, and minor bornite with some chalcocite. Chalcopyrite and molybdenite also occur within quartz veins up to 0.6 metres wide within the quartz diorite. Skarn minerals include epidote, garnet and chlorite. Pyrite is ubiquitous throughout the contact area.

A 5.2 metre wide sample of the skarn zone assayed 0.55 per cent copper and 0.25 per cent MoS2 (Assessment Report 3465). A small skarn zone, 450 metres south of the shore skarn, assayed 0.19 per cent copper, 0.10 per cent MoS2, and 3.4 grams per tonne silver over 6.4 metres (Assessment Report 3465).

Bibliography
EMPR AR *1920-38; 1929-75
EMPR ASS RPT *3465, 8463, 13101
EMPR EXPL 1980-388; 1984-373
EMPR GEM 1972-498
EMPR OF 2004-2
EMPR PF (Cukor, V., (1971): Report on Ban Group, Banks Island for Quest Mining Corporation Ltd., Jan.18, 1971)
EMR MP CORPFILE (Quested Mining Corporation Ltd.)
GSC MAP 23-70
GSC P *70-41 p. 52
GCNL #137, 1971; #153, 1980
EMPR PFD 17890

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