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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  18-Dec-1990 by Garry J. Payie (GJP)

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NMI 092C10 Cu1
Name MAL, MARCHAND CREEK Mining Division Victoria
BCGS Map 092C077
Status Showing NTS Map 092C10E
Latitude 048º 44' 55'' UTM 10 (NAD 83)
Longitude 124º 43' 35'' Northing 5400948
Easting 373096
Commodities Copper, Silver, Zinc, Lead Deposit Types
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Mal occurrence is underlain by coarse-grained quartz monzonite of the Early to Middle Jurassic Island Plutonic Suite (formerly the Island Intrusions). The monzonite contains inclusions of saussuritized quartz diorite of the Mesozoic and/or Paleozoic Westcoast Complex and volcanic rocks. These rocks are cut by several southeast trending, steeply dipping, slightly porphyritic andesite dykes.

The mineralization occurs in a fault zone about 7.6 metres wide striking 130 degrees and dipping 75 degrees to the northeast. The fault cuts the monzonite, quartz diorite and the andesite dykes. A few light coloured granitic stringers a few centimetres in width have been intruded along the fault.

Chalcopyrite, sphalerite and pyrite occur in the fault in bands or lenses up to 0.6 metres wide. The gangue consists of quartz, chlorite, clinozoisite, actinolite, hypersthene and a black opaque iron-silicate mineral thought to be thuringite. The sphalerite is a dark variety and veins the thuringite.

Six shallow diamond-drill holes over a 90 metre length of outcrop averaged 2.17 per cent copper, 1.94 per cent zinc and 72.69 grams per tonne silver (National Mineral Inventory 092C10 Cu1).

EMPR AR *1963-123; *1964-168; 1965-239; 1966-78
EMPR FIELDWORK 1989, pp. 503-510
EMPR GEM *1972-256
EMPR PF (*Marshall Creek Copper Co., Prospectus, Nov, 1963; Various maps and plans, 1965; Marshall Creek Copper Co. Ltd., Second Annual Report, 1965)
EMR MP CORPFILE (Marshall Creek Copper Co. Ltd.)
GSC MAP 196A; 1386A
GSC OF 463; 821; 1272
GSC P 72-44; 76-1A; 79-30