Almacen

Porphyry copper prospect in Ica, Peru

Names and other identifiers

GMRAP ID 256
Tract name Peru-Ecuador Cretaceous Almacen (005pCu1007)
Site status prospect

Geographic location

Country Peru
State or province Ica
Geographic location -75.916666667, -13.234722222
Geologic map unit -75.916666667, -13.234722222
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range Cretaceous or younger
Age reference geologic inference
Minerals biotite, calcite, chalcocite, chalcopyrite, chlorite, cubanite, epidote, galena, iron oxide, magnetite, molybdenite, pyrite, pyrrhotite, sericite, sphalerite
Associated rocks aplite, breccia, dacite, microgranodiorite dike, quartz porphyry, diorite, granodiorite, monzonite, quartzite, sandstone, tonalite
Tectonic setting continental margin
Stratigraphic age Cretaceous or younger

Commodity and development information

Development status Past Producer
Major commodities Cu, Mo, Ag
Gold-Moly ratio -9999

Reference information

Comments Exposed. Resource (not fully characterized): 150 Mt at 0.3% Cu, 0.025% Mo, 8 g/t Ag.
Study area name Andes
References Estrada (1980); Petersen and Vidal (1996); Simons (1964?); Vidal (1985); Singer and others (2008); Singer and others (2005)
Site reference Cunningham and others (2008)
Estrada, F., 1980, Almacen, in Boggio, M.S., ed., El Perú Minero, v. IV, Yacimientos: Lima, Peru, p. 113–115.
Petersen, U., and Vidal, C.E., 1996, Magmatic and tectonic controls on the nature and distribution ofcopper deposits in Peru, in Camus, F., Sillitoe, R.H., and Petersen, R., eds., Andean copper deposits—New discoveries, mineralization, styles and metallogeny: Society of Economic Geologists Special Publication, no. 5, p. 1–18.
Simons, F.S., [1964?], The mineral deposits of Peru: Tucson, Ariz., U.S. Geological Survey Latin American Archive, unpub. manuscript, 1715 p., and 337 figures, and tables and oversize maps.
Singer, D.A., Berger, V.I., and Moring, B.C., 2005, Porphyry copper deposits of the world—Database, map, and grade and tonnage models: U.S. Geological Survey Open-file Report 2005-1060, [9] p. and digital data, accessed December 31, 2013, at http://pubs.usgs.gov/of/2005/1060/.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/.
Vidal, C., 1985, Metallogenesis associated with the Coastal Batholith of Peru—A review, in Pitcher, W.S., Atherton, M.P., Cobbing, E.J., and Beckinsale, R.D., eds., Magmatism at a plate edge, the Peruvian Andes: London, Blackie, p. 243–249.