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File Created: 18-Sep-1990 by Dorthe E. Jakobsen (DEJ)
Last Edit:  01-Jan-0001 by BC Geological Survey (BCGS)

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Name MCDOUGALL, HEATHER, LUCIA S Mining Division Nanaimo
BCGS Map 092C098
Status Showing NTS Map 092C16W
Latitude 048º 59' 35'' UTM 10 (NAD 83)
Longitude 124º 29' 14'' Northing 5427749
Easting 391207
Commodities Gold, Copper Deposit Types
Tectonic Belt Insular Terrane Wrangell
Capsule Geology

The McDougall showing is located 40 kilometres southwest of Nanaimo and 7 kilometres north of Cowichan Lake. This showing occurs on the Heather property (092C 127), 1.7 kilometres north of the main showing.

The area is within the Cowichan uplift and is underlain by Paleozoic Sicker Group rocks. The showing is underlain by northwest trending Devonian Nitinat and Upper Devonian McLauglin Ridge formations comprising volcanic and volcaniclastic rocks. Early to Middle Jurassic Island Plutonic Suite intrusives also occur in the area.

The McDougall showing consists of three en echelon quartz veins which strike northeast and dip near vertically. The veins locally contain trace pyrite and chalcopyrite-rich (2-3 percent) malachite- stained pods. The veins occur in relatively unaltered Nitinat flow breccias. The veins are 12.0 by 0.3 metres, 4.5 by 0.3 metres and 2.0 by 0.2 metres in size, respectively.

The highest gold value was obtained from a panel sample, 6.5 by 0.25 metres in size, of the largest vein. This sample assayed 9.15 grams per tonne gold (Assessment Report 17833).

Diamond drilling results in 1988 were disappointing.

EMPR ASS RPT *17833, 17835, 18521
EMPR FIELDWORK 1986, pp. 223-229; 1987, pp. 81-91; 1989, pp. 503-510
EMPR MP MAP 1992-2
EMPR OF *1987-2; RGS 24. 1990
EMPR PF (In General File: B.C. Forest Products Road Map, Cowichan Lake Area, 1963)
GSC OF 463; 821; 1272
GSC P 72-44; 76-1A; 79-30
WIN Jan. 1987
Carson, D.J.T. (1968): Metallogenic study of Vancouver Island with emphasis on the relationships of mineral deposits to plutonic rocks, Ph.D. Thesis, Carleton University
Falconbridge File
Falconbridge File