Copper Mountain Group

Porphyry copper (Cu-Au) Group in British Columbia, Canada

Names and other identifiers

GMRAP ID 5008
Tract name Intermontane Island-Arc Cu-Au (003pCu2002x)
Group name Copper Mountain Group
Included sites Alabama and Copper Mountain deposits and Deep Gulch, Duke of York, Fraser, Friday Creek, ILK, Jennie Silkman, June Bug, Marquis of Lorne, Oriole, Oronoco, Ray, Reco, Virginia, and Voigt prospects
Site status Group

Geographic location

Country Canada
State or province British Columbia
Geographic location -120.538, 49.341
Geologic map unit -120.538, 49.341
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Au
Age (Ma) 204
Age determination method U-Pb zircon
Age range 204 Ma (U-Pb zircon); 194 Ma (K-Ar)
Age reference unknown
Minerals bornite, chalcocite, chalcopyrite, magnetite, pyrite
Associated rocks diorite, monzonite, syenite, diorite porphyry dike, felsite dike
Tectonic setting island arc
Stratigraphic age Late Triassic–Early Jurassic

Commodity and development information

Development status Past Producer
Major commodities Cu, Au, Ag
Tonnage (Mt) 485Mt
Cu grade (%) 0.38%
Mo grade (%) 0.001%
Au grade (g/t) 0.25g/t
Ag grade (g/t) 2.87g/t
Contained copper 1,800,000t
Gold-Moly ratio 200

Reference information

Comments This group record includes data for the Alabama and Copper Mountain deposits and Deep Gulch, Duke of York, Fraser, Friday Creek, ILK, Jennie Silkman, June Bug, Marquis of Lorne, Oriole, Oronoco, Ray, Reco, Virginia, and Voigt prospects; as such, the location information has been generalized, and the total weighted average resource data represent the two deposits in the group.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Sutherland Brown (1976); Schroeter (1995); Sinclair (2007); DeGrace and others (2008); DeGrace and others (2009); Singer and others (2008); Andre Panteleyev (oral commun., 2009)
Site reference Mihalasky and others (2011, revised 2013)
MINFILE BC, 2009, MINFILE Mineral inventory: British Columbia Ministry of Energy, Mines and Petroleum Resources, MINFILE database, total records 12,523, accessed December 2009, at http://minfile.gov.bc.ca/.
Sutherland Brown, A., 1976, ed., Porphyry deposits of the Canadian Cordillera: The Canadian Institute of Mining and Metallurgy, Special Volume 15, the Charles S. Ney Volume, 510 p., 2 pl., scale 1:250,000,000.
Schroeter, T.G., ed., 1995, Porphyry deposits of the northwestern Cordillera of North America: Canadian Institute of Mining, Metallurgy and Petroleum Special Volume 46, 888 p.
Sinclair, W.D., 2007, Porphyry Deposits, in Goodfellow, W.D., ed., Mineral deposits of Canada—A synthesis of major deposit-types, district metallogeny, the evolution of geological provinces, and exploration methods: Geological Association of Canada, Mineral Deposits Division, Special Publication no. 5, p. 223–243.
DeGrace, John; Grant, Brian; Grieve, David; Lefebure, David; Madu, Bruce; Northcote, Bruce; and Wojdak, Paul, 2008, British Columbia mining and mineral exploration overview 2007—British Columbia Ministry of Energy, Mines and Petroleum Resources, Information Circular 2008-1, 30 p. (Also available online at http://www.empr.gov.bc.ca/Mining/Geoscience/PublicationsCatalogue/MineralExplorationReview/Documents/EX-REVIEW_IC2008-1.pdf.)
DeGrace, John; Fredericks, Jay; Grieve, David; Lefebure, David; Madu, Bruce; Northcote, Bruce; and Wojdak, Paul, 2009, British Columbia mining and mineral exploration overview 2008—British Columbia Ministry of Energy, Mines and Petroleum Resources, Information Circular 2009-1, 31 p.
Singer, D.A., Berger, V.I., and Moring, B.C., 2008, Porphyry copper deposits of the world—Database and grade and tonnage models, 2008: U.S. Geological Survey Open-File Report 2008-1155, [45] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2008/1155/.