Porphyry copper (Cu-Mo) deposit in Antofagasta, Chile

Names and other identifiers

Alternate names Rosario
Tract name Chile Eocene–Oligocene Chuquicamata (005pCu1010)
Site status deposit

Geographic location

Country Chile
State or province Antofagasta
Geographic location -68.708333333, -20.963055556
Geologic map unit -68.708333333, -20.963055556
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Mo
Age (Ma) 32.9Ma
Age determination method Ar-Ar
Age range 32.9 ±0.6 Ma
Age reference Clark and others (1998)
Minerals albite, alunite, biotite, bornite, brochantite, chalcocite, chalcopyrite, chlorite, chrysocolla, colusite [Cu3(As,Sn,V,Fe)S4], copper, covellite, cuprite, Cu-wad, dickite, digenite, enargite, galena, hematite, kaolinite/illite, magnetite, mawsonite [Cu3Fe2SnS8], molybdenite, muscovite/sericite, pyrite, pyrophyllite, rutile, stannite, tennantite
Associated rocks dacite porphyry, granodiorite porphyry, quartz porphyry, andesite, andesitic tuffite, carbonate rock, rhyolite, shale, tuff
Tectonic setting continental margin
Stratigraphic age Oligocene

Commodity and development information

Development status Producer
Major commodities Cu, Mo, Au, Ag
Tonnage (Mt) 3,100Mt
Cu grade (%) 0.86%
Mo grade (%) 0.04%
Au grade (g/t) 0.01g/t
Ag grade (g/t) 5g/t
Contained copper 27,000,000t
Gold-Moly ratio 0.2

Reference information

Comments Exposed.
Study area name Andes
References Bisso and others (1998); Briggs (2006); Clark and others (1998); De Beer and Dick (1994); Dick and others (1994); Masterman and others (2004); Masterman, Cooke, Berry and others (2005); Mine of the Month (2006); Moore and Masterman (2002); Münchmeyer (1996); Zappettini and others (2001); Singer and others (2008)
Site reference Cunningham and others (2008)
Bisso, C.B., Duran, M., and Gonzales, A.A., 1998, Geology of the Ujina and Rosario copper porphyry deposits, Collanhuasi district, Chile, in Porter, T.M., ed., Porphyry and hydrothermal copper and gold deposits—A global perspective: Adelaide, PGC Publishing, Australian Mineral Foundation International Conference, Perth, Western Australia, November 30–December 1, 1998 [Proceedings], p. 217–232. (Abstract also available at
Briggs, D.F., 2006, Mining operations report, ver. 2005: unpublished report, [unknown] p.
Clark, A.H., Archibald, D.A., Lee, A.W., Farrar, Edward, and Hodgson, C.J., 1998, Laser probe 40Ar/39Ar ages of early- and late-stage alteration assemblages, Rosario porphyry copper-molybdenum deposit, Collahuasi district, I Region, Chile: Economic Geology, v. 93, p. 326–337. (Also available at
De Beer, L.J., and Dick, L.A., 1994, Development of the Collahuasi copper deposits—A world-class copper project in the Andes of northern Chile, in Mining Latin America: London, The Institution of Mining and Metallurgy, p. 181–195.
Dick, L.A., Chávez, W.X., Jr., Gonzales, A., and Bisso, C., 1994, Geologic setting and mineralogy of the Cu-Ag-(As) Rosario vein system, Collahuasi district, Chile: Society of Economic Geologists SEG Newsletter, no. 19, p. 1, 6–11. (Also available at, G.J., Cooke, D.R., Berry, R.F., Clark, A.H., Archibald, D.A., Mathur, Ryan, Walshe, J.L., and Durán, Manuel, 2004, 40Ar/39Ar and Re-Os geochronology of porphyry copper-molybdenum deposits and related copper-silver veins in the Collahuasi district, northern Chile: Economic Geology, v. 99, p. 673–690. (Also available at, G.J., Cooke, D.R., Berry, R.F., Walshe, J.L., Lee, A.W., and Clark, A.H., 2005, Fluid chemistry, structural setting, and emplacement history of the Rosario Cu-Mo porphyry and Cu-Ag-Au epithermal veins, Collahuasi district, northern Chile:Economic Geology, v. 100, p. 835–862. (Also available at
Mine of the Month, 2006, Collahuasi on high: Mining Magazine, January 2006.
Moore, R.L., and Masterman, G.J., 2002, The corporate discovery history and geology of the Collahuasi porphyry copper deposits, Chile, in Cooke, D.R., and Pongratz, J., eds., Giant ore deposits—Characteristics, genesis and exploration: CODES Special Publication 4, p. 23–50.
Münchmeyer, C., 1996, Exotic deposits—Products of lateral migration of supergene solutions from porphyry copper deposits, in Camus, F., Sillitoe, R.H., and Petersen, R., eds., Andean copper deposits—New discoveries, mineralization, style and metallogeny: Society of Economic Geologists Special Publication 5, p. 43–58.
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
Zappettini, Eduardo; Miranda-Angles, Vitaliano; Rodriguez S., Carolina; Palacios, Oscar; Cocking,Robert; Godeas, Marta; Uribe-Zeballos, Hernán; Vivallo S., Waldo; Paz, M.M.; Seggiaro, Raúl; Heuschmidt, Bertand; Gardeweg P., Moyra; Boulangger Rondoy, Elmere; Korzeniewski, Lidia I.; Mpodozis M., Constantino; Carpio R., Mario; and Rubiolo, Daniel, 2001, Mapa metalogénico de laregión fronteriza entre Argentina, Bolivia, Chile y Perú (14ºS–28ºS): Santiago, Chile, Servicio Nacional de Geología y Minería, Publicacion Geológica Multinacional No. 2, 222 p., 1 map, scale 1:1,000,000.