Thezar 75

Porphyry copper prospect in British Columbia, Canada

Names and other identifiers

Alternate names Lennac Lake
Tract name Cordilleran Continental Arc (003pCu2004x)
Included sites Lennac Lake, Thezar 81 (East)
Site status prospect

Geographic location

Country Canada
State or province British Columbia
Geographic location -126.33779577, 54.750005373
Geologic map unit -126.33779577, 54.750005373
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 77Ma
Age determination method K-Ar biotite
Age range 77 Ma
Age reference unknown
Minerals chalcocite, chalcopyrite, magnetite, malachite, molybdenite, pyrite
Associated rocks quartz diorite porphyry, biotite quartz diorite dike
Tectonic setting continental margin
Stratigraphic age Late Cretaceous

Commodity and development information

Development status Occurrence
Major commodities Cu
Gold-Moly ratio -9999

Reference information

Comments Grades: 0.26 percent Cu, 0.004 percent Mo, 0.14 g/t Ag.
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
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.