Bethlehem

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

Names and other identifiers

GMRAP ID 9636
Alternate names Bethlehem Mine
Tract name Intermontane Island-Arc (003pCu2001x)
Group name Highland Valley Group
Included sites East Jersey, Highmont, Huestis, Iona, Jersey, JA; Group includes Ann, Bethlehem, Getty South, Highland Valley Copper, Highmont, IDE-AM, JA, Krain,and Lornex deposits and BX, Getty West, Highmont West, Jericho, MER, Rateria, and other prospects.
Site status deposit

Geographic location

Country Canada
State or province British Columbia
Geographic location -120.987815434, 50.498105915
Geologic map unit -120.987815434, 50.498105915
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Mo
Age (Ma) 203Ma
Age determination method K-Ar
Age range 203 Ma (K-Ar); 199 Ma (K-Ar biotite)
Age reference unknown
Minerals bornite, chalcocite, chalcopyrite, covellite, cuprite, galena, molybdenite, native copper, pyrite, sphalerite
Associated rocks granodiorite, quartz diorite, dacite porphyry
Tectonic setting island arc
Stratigraphic age Late Triassic–Early Jurassic

Commodity and development information

Development status Past Producer
Major commodities Cu, Ag, Au
Minor commodities Mo
Tonnage (Mt) 677Mt
Cu grade (%) 0.45%
Mo grade (%) 0.016%
Au grade (g/t) 0.005g/t
Ag grade (g/t) 0.4g/t
Contained copper 3,000,000t
Gold-Moly ratio 0.3

Reference information

Comments 1962–1982, production.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Drummond and Godwin (1976); Singer and others (2008)
Site reference Mihalasky and others (2011, revised 2013)
Drummond, A.D., and Godwin, C.I., 1976, Hypogene mineralization—an empirical evaluation of alteration zoning, in 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, p. 52–63, and a table of geologic characteristics of 36 major porphyry deposits of the Canadian Cordillera (in pocket).
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/.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/.