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Giant Copper AM Breccia

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

Names and other identifiers

GMRAP ID 9729
Alternate names Giant Copper (AM Breccia), AM Breccia
Tract name Late Continental Arc (003pCu2005)
Group name Giant Copper Group
Included sites Group includes Giant Copper AM Breccia and Invermay deposits and Giant Copper No. 1 prospect.
Site status deposit

Geographic location

Country Canada
State or province British Columbia
Geographic location -121.02471507, 49.163605844
Geologic map unit -121.02471507, 49.163605844
Nearby data
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Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Mo
Age (Ma) 22Ma
Age determination method K-Ar
Age range 22 Ma
Age reference unknown
Minerals arsenopyrite, chalcopyrite, galena, magnetite, molybdenite, monazite, pyrite, pyrrhotite, scheelite, sphalerite, uraninite
Associated rocks diorite, quartz diorite, granodiorite
Tectonic setting continental margin
Stratigraphic age Miocene

Commodity and development information

Development status Prospect
Major commodities Cu, Au, Ag
Minor commodities Zn, Pb, Mo
Trace commodities W, U
Tonnage (Mt) 30Mt
Cu grade (%) 0.65%
Mo grade (%) 0.007%
Au grade (g/t) 0.011g/t
Ag grade (g/t) 0.36g/t
Contained copper 192,000t
Gold-Moly ratio 2

Reference information

Comments Six geochem anom zones; AM zone open below 500 m.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Pilcher and McDougall (1976); Schroeter and others (2007); Sinclair (2007); Singer and others (2008); Imperial Metals Corp. (2009a)
Site reference Mihalasky and others (2011, revised 2013)
Imperial Metals Corp., 2009a: Imperial Metals Corp. Web page accessed 2009, at http://www.imperialmetals.com/. [Web page for Giant Copper AM Breccia no longer exists.]
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, 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/.