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File Created: 24-Jul-1985 by BC Geological Survey (BCGS)
Last Edit:  23-Feb-1989 by David G. Bailey (DGB)

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Name COOPER CREEK Mining Division Cariboo
BCGS Map 093H012
Status Past Producer NTS Map 093H04E
Latitude 053º 11' 03'' UTM 10 (NAD 83)
Longitude 121º 43' 28'' Northing 5893517
Easting 585236
Commodities Gold Deposit Types C01 : Surficial placers
Tectonic Belt Omineca Terrane Barkerville
Capsule Geology

Placer gold deposits of the Quesnel Highland region, including the former rich producers of the Barkerville camp, have accounted for a large proportion of British Columbia's alluvial gold production. With the exception of a few producers in the Wingdam area, which are underlain by Upper Triassic sediments correlative with the Nicola Group, almost all the deposits are underlain by the Upper Proterozoic to Lower Paleozoic Snowshoe Group. These rocks have been metamorph- osed to greenschist facies and are predominantly metasedimentary.

Placer gold deposits in the region are generally found in relatively young Pleistocene gravels. The morphology and mineral associations of the gold suggests that it was derived locally, the most obvious sources are the numerous auriferous veins in the Downey succession of the Snowshoe Group.

Placer operations took place on small benches and along the bed of Cooper Creek for approximately 1,000 metres upstream from its mouth. The area is underlain by Snowshoe Group rocks.

"Data from the Cariboo mining district indicate that supergene leaching of gold dispersed within massive sulphides by Tertiary deep weathering followed by Cenozoic erosion is the most likely explanation for the occurrence of coarse gold nuggets in Quaternary sediments" (Exploration in British Columbia 1989, page 147).

EMPR AR 1939-106; 1940-91; 1941-86; 1947-123; 1949-241; 1950-199; 1951-204; 1954-170; 1955-85
EMPR EXPL 1984, pp. 313,314; 1985, p. C301; 1989, pp. 147-169
EMPR BULL 28, pp. 21,24
EMPR ASS RPT 10586, 12875, 13669
EMPR FIELDWORK 1990, pp. 331-356; 1992, pp. 463-473
GSC SUM RPT 1933A, p. 61
EMPR PFD 681607