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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  10-Feb-90 by Laura L. Duffett(LLD)

Summary Help Help

NMI
Name RACOON ISLAND, DOT FRACTION Mining Division New Westminster
BCGS Map 092G036
Status Showing NTS Map 092G07W
Latitude 49º 20' 25" N UTM 10 (NAD 83)
Longitude 122º 54' 20" W Northing 5465288
Easting 506861
Commodities Gold Deposit Types
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks
Capsule Geology

The Dot Fraction claim is located on Racoon Island in Indian Arm. The island is underlain by granitic rocks of the Jurassic to Tertiary Coast Plutonic Complex.

Several open cuts and a 2.4 metre shaft occur near the centre of the island towards the northern shore. The open cut exposes oxidized quartz. A selected sample, in 1935, from a small pile of this mater- ial assayed 1.37 grams per tonne gold (Property FIle - Richmond, M.E. (1935)).

The oxidized quartz hosts pyrite mineralization which occurs in fine-grained dioritic rocks near a basic phase of the intruding granodiorite.

Bibliography
EMPR PF (*Richmond, M.E. (1935): Interim Report on the Jug and Dot  Fraction Mineral Claims, North Arm of Burrard Inlet; Bailey, F.  (1933): Synoptical Report of Vancouver Group to the Burrard  Mining Company)
GSC MAP 8-1958; 1069A; 1151A; 1153A; 1386A
GSC MEM 335
GSC P 90-1F, pp. 95-107
Armstrong, J.E. (1990): Vancouver Geology, Geological Association of  Canada (Cordilleran Section)
Ditson, G.M. (1978): Metallogeny of the Vancouver-Hope Area,  British Columbia, M.Sc. Thesis, University of British Columbia

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