Constancia

Porphyry copper deposit in Cuzco, Peru

Names and other identifiers

GMRAP ID 618
Tract name Peru Eocene–Oligocene Antapaccay (005pCu1009)
Included sites San Jose
Site status deposit

Geographic location

Country Peru
State or province Cuzco
Geographic location -71.76667, 14.4616666667
Geologic map unit -71.76667, 14.4616666667
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 42Ma
Age determination method unknown
Age range 44–41 Ma; 33.2 ±1.9 Ma
Age reference Camus (2003); Singer and others (2008)
Minerals chalcocite, chalcopyrite, chlorite, galena, illite, kaolinite, molybdenite, pyrite, pyrophyllite, sericite, sphalerite
Associated rocks breccia, dacite porphyry, andesite, dacite, limestone, monzonite porphyry, shale, skarn
Tectonic setting continental margin
Stratigraphic age late Eocene

Commodity and development information

Development status Prospect
Major commodities Cu, Mo, Ag
Tonnage (Mt) 320Mt
Cu grade (%) 0.514%
Mo grade (%) 0.013%
Ag grade (g/t) 4.39g/t
Contained copper 1,650,000t
Gold-Moly ratio -9999

Reference information

Comments Discovered in 1980s; 0.2% Cu cut-off grade. Partial enrichment to 316 m below surface. Exposed. Andahuaylas-Yauri belt.
Study area name Andes
References Norsemont Mining Inc. (2007a); Norsemont Mining Inc. (2007b); Camus (2003); Panoro Minerals Ltd. (2007); Perelló and others (2003); Singer and others (2008)
Site reference Cunningham and others (2008)