Kemess North

Porphyry copper deposit in British Columbia, Canada

Names and other identifiers

GMRAP ID 9784
Tract name Intermontane Island-Arc (003pCu2001x)
Group name Kemess Group
Included sites Group includes Kemess North and Kemess South deposits.
Site status deposit

Geographic location

Country Canada
State or province British Columbia
Geographic location -126.759418857, 57.060005346
Geologic map unit -126.759418857, 57.060005346
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 202Ma
Age determination method U-Pb zircon
Age range 202 Ma (U-Pb zircon); 182 Ma (K-Ar(?) whole rock)
Age reference unknown
Minerals bornite, chalcocite, chalcopyrite, magnetite, molybdenite, pyrite
Associated rocks quartz monzonite, syenite porphyry, quartz monzodiorite, granodiorite
Tectonic setting island arc
Stratigraphic age Late Triassic–Early Jurassic

Commodity and development information

Development status Prospect
Major commodities Cu, Au, Mo
Tonnage (Mt) 719Mt
Cu grade (%) 0.15%
Au grade (g/t) 0.15g/t
Contained copper 1,100,000t
Gold-Moly ratio -9999

Reference information

Comments 1993, resource estimated; open down dip, to NW, to SE.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Schroeter (1995); Schroeter and others (2007); Sinclair (2007); Singer and others (2008); James Logan (written commun., 2008); Northgate Minerals 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/.Northgate Minerals Corp., 2008: Northgate Minerals Corp. Web page accessed 2008, at http://www.northgateminerals.com/.
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; 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/.