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File Created: 24-Jul-85 by BC Geological Survey (BCGS)
Last Edit:  04-Jan-90 by Laura L. Duffett(LLD)

Summary Help Help

NMI
Name CROKER ISLAND QUARRY Mining Division New Westminster
BCGS Map 092G046
Status Past Producer NTS Map 092G07W
Latitude 49º 26' 14" N UTM 10 (NAD 83)
Longitude 122º 52' 15" W Northing 5476070
Easting 509365
Commodities Granite, Dimension Stone, Aggregate, Building Stone Deposit Types R03 : Dimension stone - granite
R15 : Crushed rock
Tectonic Belt Coast Crystalline Terrane Plutonic Rocks
Capsule Geology

Granite was quarried from an outcrop that rises to a height of about 30 metres near the middle point, on the west side of Croker Island. No production figures are available.

The granite or granodiorite is part of the Jurassic to Tertiary Coast Plutonic Complex. The intrusive rock is fairly uniform in appearance and exhibits horizontal sheet jointing, ranging from 0.3 to 4.5 metres in thickness.

Bibliography
EMPR IND MIN FILE (Hora, Z.D. (1979): Rock Quarries in British  Columbia - Granite, p. 8 (in Ministry Library))
EMPR OF 1991-20
GSC MAP 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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