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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  22-Jul-2015 by Karl A. Flower (KAF)

Summary Help Help

NMI
Name GROUP A, JOHNNY Mining Division Vancouver
BCGS Map 092G054
Status Showing NTS Map 092G11W
Latitude 049º 34' 57'' UTM 10 (NAD 83)
Longitude 123º 17' 55'' Northing 5492256
Easting 478415
Commodities Molybdenum, Copper Deposit Types L04 : Porphyry Cu +/- Mo +/- Au
I05 : Polymetallic veins Ag-Pb-Zn+/-Au
Tectonic Belt Coast Crystalline Terrane Gambier, Plutonic Rocks
Capsule Geology

The Group A occurrence is located at an elevation of 15 metres on the north west shore of Howe Sound, approximately 1.2 kilometres east of the mouth of Potlatch Creek.

The area is underlain by quartz diorite of the Cenozoic-Mesozoic Coast Plutonic Complex containing a small pendant of metavolcanic and metasedimentary rocks of the Lower Cretaceous Gambier Group.

Locally, a molybdenite-bearing, ribboned quartz vein varying from 0.45 to 1.80 metres in width is exposed in Gambier Group rocks. The vein has been traced for 274 metres along a northwest strike, where it eventually pinches out. The quartz diorite intrusive rocks in the vicinity are fractured and cut by numerous quartz veins containing chalcopyrite and molybdenite.

In 1967, Bullion Mountain Mining completed a soil sampling program on the area as the Group A (Johnny) claims. Previous, diamond drilling of three holes is reported to have intersected only narrow widths containing low molybdenum values (Assessment Report 1214). No assay values were reported.

Bibliography
EMPR ASS RPT *1214
EMPR FIELDWORK 1980, pp. 165-178
GSC MAP 42-1963; 1386A
GSC MEM 158
GSC OF 611
GSC P 89-1E, pp. 177-187; 90-1E, pp. 183-195; 90-1F, pp. 95-107
Ditson, G.M. (1978): Metallogeny of the Vancouver-Hope Area, British Columbia, M.Sc. Thesis, University of British Columbia
EMPR PFD 671444

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