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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  04-Jun-1990 by Peter S. Fischl (PSF)

Summary Help Help

NMI
Name SN, SEEL Mining Division Vancouver
BCGS Map 092G061
Status Showing NTS Map 092G12W
Latitude 049º 37' 20'' UTM 10 (NAD 83)
Longitude 123º 50' 53'' Northing 5496974
Easting 438748
Commodities Copper, Molybdenum Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks
Capsule Geology

Copper and molybdenum mineralization outcrops on the east shore of Sechelt Peninsula, 13 kilometres north-northeast of Halfmoon Bay.

The SN showing is hosted in equigranular, medium-grained diorite of Upper Jurassic age, within the Jurassic to Tertiary Coast Plutonic Complex. The diorite locally exhibits moderate to intense argillic alteration and silicification.

Pyrite and molybdenite occur in surface exposures as blebs and disseminations in a quartz vein stockwork and in the host diorite. Pyrite also occurs in massive pods in quartz veins and in fracture- fillings in the diorite. Diamond drilling encountered molybdenite, chalcopyrite and pyrite confined largely to zones of altered diorite. One section of extremely altered diorite containing blebs of pyrite and molybdenite accompanied by pyritic fractures assayed 0.012 per cent molybdenum and 0.11 per cent copper between 21.0 and 23.8 metres depth (Assessment Report 9519, page 3, Hole E)

Bibliography
EMPR ASS RPT 8750, *9519
EMPR PF (detailed topographic map (1:4800))
GSC MAP 42-1963; 1069A; 1386A
GSC OF 611
GSC P 90-1F, pp. 95-101
Ditson, G.M. (1978): Metallogeny of the Vancouver-Hope Area, British Columbia, M.Sc. Thesis, University of British Columbia
EMPR PFD 550, 8178, 8179, 8180

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