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Lexington-Lone Star

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

Names and other identifiers

GMRAP ID 9802
Alternate names City of Denver, City of Paris
Tract name Cordilleran Continental Arc (003pCu2004x)
Included sites Lone Star
Site status deposit

Geographic location

Country Canada
State or province British Columbia
Geographic location -118.615314604, 49.011706107
Geologic map unit -118.615314604, 49.011706107
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Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Au
Age (Ma) 57Ma
Age determination method K-Ar
Age range 57 Ma
Age reference unknown
Minerals chalcocite, chalcopyrite, malachite, molybdenite, native gold, pyrite
Associated rocks quartz porphyry, dacitic porphyry, quartz-feldspar porphyry, diorite dike
Tectonic setting continental margin
Stratigraphic age Paleocene

Commodity and development information

Development status Prospect
Major commodities Cu, Au, Ag
Minor commodities Pb, Zn
Tonnage (Mt) 20Mt
Cu grade (%) 0.56%
Au grade (g/t) 0.55g/t
Contained copper 110,000t
Gold-Moly ratio -9999

Reference information

Comments 1994, resource estimated; quartz-porhyry dike with local Cu-Au veinlets, sparse Mo on slips.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Pilcher and McDougall (1976); Schroeter (1995); Sinclair (2007)
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/.
Pilcher, S.H., and McDougal, J.J., 1976, Characteristics of some Canadian Cordilleran porphyry prospects: in Sutherland Brown, A., ed., Porphyry deposits of the Canadian Cordillera: The Canadian Institute of Mining and Metallurgy, Special Volume 15, the Charles S. Ney Volume, p. 79–82.
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.