Lorraine Group

Porphyry copper Group in British Columbia, Canada

Names and other identifiers

GMRAP ID 5035
Tract name Intermontane Island-Arc Cu-Au (003pCu2002x)
Group name Lorraine Group
Included sites Jajay, Misty, and TAM deposits and All Alone Dome and Jeno prospects
Site status Group

Geographic location

Country Canada
State or province British Columbia
Geographic location -125.486, 55.939
Geologic map unit -125.486, 55.939
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 175
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
Trace commodities Pd, Pt
Tonnage (Mt) 42Mt
Cu grade (%) 0.64%
Au grade (g/t) 0.13g/t
Ag grade (g/t) 4.26g/t
Contained copper 270,000t
Gold-Moly ratio -9999

Reference information

Comments This group record includes data for the Jajay, Misty, and TAM deposits and All Alone Dome and Jeno prospects; as such, the location information has been generalized, and the total weighted average resource data represent the three deposits in the group.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Pilcher and McDougall (1976); 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)
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.
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/.Lorraine Copper Corp., 2008: Lorraine Copper Corp. Web page accessed 2008, at http://www.lorrainecopper.com/s/Projects.asp.