Gem Lake

Porphyry copper prospect in British Columbia, Canada

Names and other identifiers

GMRAP ID 9725
Alternate names MEG
Tract name Cordilleran Continental Arc (003pCu2004x)
Site status prospect

Geographic location

Country Canada
State or province British Columbia
Geographic location -125.410815908, 49.684405356
Geologic map unit -125.410815908, 49.684405356
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 49Ma
Age determination method Inferred from K-Ar age for Catface
Age range 49 Ma
Age reference unknown
Minerals chalcopyrite, magnetite, molybdenite, pyrite, pyrrhotite
Associated rocks quartz diorite, granodiorite
Tectonic setting continental margin
Stratigraphic age Eocene

Commodity and development information

Development status Occurrence
Major commodities Cu, Au, Ag
Minor commodities Mo
Gold-Moly ratio -9999

Reference information

Comments Grades: 1 percent Cu.
Study area name British Columbia and Yukon Territory
References MINFILE BC (2009); Pilcher and McDougall (1976)
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.