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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  18-Jan-2013 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name EMPRESS Mining Division Alberni
BCGS Map 092F042
Status Showing NTS Map 092F05E
Latitude 049º 25' 14'' UTM 10 (NAD 83)
Longitude 125º 44' 38'' Northing 5477829
Easting 301012
Commodities Copper Deposit Types I06 : Cu+/-Ag quartz veins
Tectonic Belt Insular Terrane Plutonic Rocks
Capsule Geology

The Empress showing exposed along a former logging road on the eastern side of the Bedwell River, approximately 600 metres south of the 5 Mile Bridge.

The area is underlain by volcanics of the Upper Triassic Karmutsen Formation (Vancouver Group) which are intruded by granitic rock of the Jurassic Island Plutonic Suite. In the Bedwell River area the Karmutsen rocks consist of fine-grained andesites and black or dark green basalts. The Jurassic plutonic rocks on Vancouver Island vary in composition from gabbro to quartz monzonite but are mainly granodiorite and quartz diorite.

Chalcopyrite occurs on the cleavage planes of sheared granodiorite. The ore occurs in narrow stringers and does not appear to be disseminated throughout the country rock. This shear zone has a width of about 7.5 metres. A grab sample contained a trace of gold and silver and 5.1 per cent copper (Minister of Mines Annual Report 1918).

Another area of copper mineralization is reported exposed, along the road, approximately 200 metres to the south.

Bibliography
EMPR AR 1917-292, *1918-265
EMPR BULL 8; 13, p. 30
EMPR PF (Wallace, C. (1970-07-08): Notes on the Wallace Property)
GSC MAP 17-1968; 1386A
GSC MEM 204, p. 25
GSC OF 463
GSC P 68-50; 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Metallogenic Study of Vancouver Island With Emphasis on the Relationships of Mineral Deposits to Plutonic Rocks, Unpublished Ph.D. Thesis, Carleton University

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