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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  09-Dec-2013 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name GALENA, BAT Mining Division Alberni
BCGS Map 092F042
Status Showing NTS Map 092F05W
Latitude 049º 24' 25'' UTM 10 (NAD 83)
Longitude 125º 45' 15'' Northing 5476343
Easting 300211
Commodities Copper, Iron Deposit Types
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The Galena occurrence is located west of the Bedwell River, approximately 2.3 kilometres north of its junction with Ursus Creek.

The area is underlain mainly by volcanics of the Upper Triassic Karmutsen Formation, Vancouver Group. In the Bedwell River area these consist of fine grained andesites and black or dark green basalts. Lenses of recrystallized limestone also occur locally. Large areas to the immediate west of the head of Bedwell Sound and a few kilometres to the north are underlain by rock of the Early to Middle Jurassic Island Plutonic Suite. These plutonic rocks vary in composition from gabbro to quartz monzonite but are mainly granodiorite and quartz diorite.

The showing is reported to occur in altered volcanic rock that early reports called diabase. Granitic dykes are reported to occur in the vicinity. A strong joint, striking about 025 degrees and dipping 75 degrees west, forms the footwall of the mineralized zone. A set of joints, striking about due north and dipping steeply, intersects the footwall joint and the mineralization extends a short distance to the north along them. The western boundary of the mineralization is irregular, varying from about 5 to 38 centimetres.

The mineralized material consists of altered volcanic rock more or less replaced by magnetite and chalcopyrite. A section studied microscopically consisted largely of diopside with masses of these metallic minerals. This ore is also cut by chlorite veinlets. One sample contained 6.86 grams per tonne silver, 3.1 per cent copper and a trace of gold (Minister of Mines Annual Report 1916, page 334).

A short 3 metre shaft and a 12 metre open cut exposed the deposit around the turn of the century.

In 1970 and 1971, W. Guppy completed programs of soil sampling and geological mapping on the area as the Tie and Braw claims. In 1988, Intercontinental Ventures completed a program of geochemical sampling, geological mapping and a ground electromagnetic survey on the area as the Prosper property. In 1991, Golden Hinde Mines completed a program of soils sampling and ground magnetic and electromagnetic surveys.

Bibliography
EMPR AR *1899-790; 1900-923; *1916-334
EMPR ASS RPT 2997, 3629, 17620, 21444
EMPR BULL *8, p. 35,36; 13, p. 30
GSC MAP 17-1968; 1386A
GSC MEM 204, p. 25
GSC OF 463
GSC P 68-50, p. 38; 72-44; 79-30; 80-16
Carson, D.J.T. (1968): Metallogenic Study of Vancouver Island With
Emphasis on the Relationships of Mineral Deposits to Plutonic
Rocks, Unpublished Ph.D. Thesis, Carleton University

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