Laguna Chamis

Porphyry copper prospect in Cajamarca, Peru

Names and other identifiers

Tract name Peru-Ecuador middle–late Miocene La Granja (005pCu1006)
Site status prospect

Geographic location

Country Peru
State or province Cajamarca
Geographic location -78.575555556, -7.118055556
Geologic map unit -78.575555556, -7.118055556
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range mid-Miocene–late Miocene or younger
Age reference geologic inference
Minerals biotite, carbonate, chalcopyrite, chlorite, kaolinite, magnetite, pyrite, sericite
Associated rocks dacite porphyry, skarn, calcareous rocks, tuff
Tectonic setting continental margin
Stratigraphic age mid-Miocene–late Miocene or younger

Commodity and development information

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

Reference information

Comments 0.25% Cu, 0.5 g/t Au.
Study area name Andes
References INGEMMET (2001d); Singer and others (2008)
Site reference Cunningham and others (2008)
INGEMMET, 2001d, Laguna Chamis: Instituto Geológico Minero y Metalúrgico of Peru, INGEMMET database (referenced Marquez, E., 1997, Porphyry host Cu-Au mineralization Laguna Chamis: IX Congreso Peruano de Geologia, Agosto).
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