Porphyry copper deposit in British Columbia, Canada

Names and other identifiers

Alternate names Lorraine, Lorrex
Tract name Intermontane Island-Arc Cu-Au (003pCu2002x)
Group name Lorraine Group
Included sites All Alone Dome, Bishop, Jeno, Jajay, Lower Main orebody, Slide (Boundary orebody), Upper Main orebody; Group includes Jajay, Misty, and TAM deposits and All Alone Dome and Jeno prospects.
Site status deposit

Geographic location

Country Canada
State or province British Columbia
Geographic location -125.440818128, 55.927805517
Geologic map unit -125.440818128, 55.927805517
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 175Ma
Age determination method K-Ar
Age range 175 ±5 Ma (K-Ar); 184 Ma (unknown method)
Age reference MINFILE BC (2009); Singer and others (2008)
Minerals azurite, bornite, chalcocite, chalcopyrite, covellite, magnetite, malachite, pyrite
Associated rocks syenite, pyroxenite, diorite, monzonite, feldspar porphyry
Tectonic setting island arc
Stratigraphic age Early Jurassic–Middle Jurassic

Commodity and development information

Development status Prospect
Major commodities Cu, Au, Ag
Tonnage (Mt) 32Mt
Cu grade (%) 0.66%
Au grade (g/t) 0.17g/t
Ag grade (g/t) 4.7g/t
Contained copper 210,000t
Gold-Moly ratio -9999

Reference information

Comments 1976, resource estimated, multiple open zones.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Schroeter (1995); Schroeter and others (2006); Schroeter and others (2007); Sinclair (2007); Singer and others (2008); Lorraine Copper Corp. (2008)
Site reference Mihalasky and others (2011, revised 2013)
Lorraine Copper Corp., 2008: Lorraine Copper Corp. Web page accessed 2008, at http://www.lorrainecopper.com/s/Projects.asp.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/.
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.
Schroeter, Tom; Cathro, Michael; Grieve, David; Lane, Robert; Pardy, Jamie; and Wojdak, Paul, 2006, British Columbia mining and mineral exploration overview 2005: British Columbia Ministry of Energy, Mines and Petroleum Resources Information Circular 2006-1, 20 p.
Schroeter, Tom; Grieve, David; Lane, Robert; Madu, Bruce; Northcote, Bruce; and Wojdak, Paul, 2007, British Columbia mining and mineral exploration overview 2006: British Columbia Ministry of Energy, Mines and Petroleum Resources Information Circular 2007-1, 28 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.
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/.