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Andacollo

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Porphyry copper deposit in Coquimbo, Chile

Names and other identifiers

GMRAP ID 307
Alternate names Andacolla, Andocollo, Carmen de Andacollo, Grande, Hypogene, Pacifico, Supergene
Tract name Chile Cretaceous Antucoya (005pCu1017)
Site status deposit

Geographic location

Country Chile
State or province Coquimbo
Geographic location -71.0925, -30.24667
Geologic map unit -71.0925, -30.24667
Nearby data
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Geologic information

Deposit type Porphyry copper
Age (Ma) 112Ma
Age determination method unknown
Age range 112 ±10 Ma, 103–89 Ma (Re-Os)
Age reference Singer and others (2008)
Minerals adularia, anhydrite/gypsum, azurite/malachite, biotite, bismuthinite, bornite, cerussite, chalcocite/digenite, chalcopyrite, chlorite, chrysocolla, cinnabar, covellite, cubanite, epidote, galena, gold, goethite, hematite/specularite, jarosite, kaolinite/illite/dickite, magnetite, molybdenite, pyrite, pyrrhotite, rutile, sericite, sphalerite, tetrahedrite
Associated rocks tonalite porphyry
Tectonic setting continental margin
Stratigraphic age Cretaceous

Commodity and development information

Development status Producer
Major commodities Cu, Au
Tonnage (Mt) 692Mt
Cu grade (%) 0.329%
Au grade (g/t) 0.109g/t
Contained copper 2,280,000t
Gold-Moly ratio -9999

Reference information

Comments Discovered in 1568; started up in 1996; open pit; total reserves and resources as of December 31, 2013; does not include 1996–2013 production of 549,172 t copper and 2010–2013 production of 207,600 oz gold.
Study area name Andes
References Camus (2005); Freydier and others (1997); Lincoln and Tellez (1996); Mundaca (2006); Reyes (1991); Sillitoe (1991); Sillitoe and Perelló (2005); Singer and others (2008)
Site reference Cunningham and others (2008)
Camus, F., 2005, The Andean porphyry systems, in Porter, T.M., ed., Super porphyry copper and gold deposits—A global perspective: Adelaide, PGC Publishing, v. 1, p. 45–63. (Abstract also available at http://www.portergeo.com.au/publishing/superporphyry/superpstart.html.)Freydier, Claire; Ruiz, Joaquin; Chesley, John; McCandless, Tom; and Munizaga, Francisco, 1997, Re-Os isotope systematics of sulfides from felsic igneous rocks—Application to base metal porphyry mineralization in Chile: Geology, v. 25, p. 775–778. (Also available at http://dx.doi.org/10.1130/0091-7613(1997)025<0775:ROISOS>2.3.CO;2.)
Lincoln, J.B., and Tellez, P.C., 1996, The Andacollo gold project, IV Region, Chile , in Green, S.M., and Struhsacker, E., eds., Geology and ore deposits of the American Cordillera: Geological Society of Nevada Field Trip Guidebook Compendium, 1995, p. 492–495.
Mundaca, A.P., 2006, Exploration reviews, Chile: Society of Economic Geologists, SEG Newsletter, no. 67, p. 45–46. (Also available at http://www.segweb.org/pdf/publications/newsletters/2006/SEG-Newsletter-67-2006-October.pdf.)Reyes, Manuel, 1991, The Andacollo strata-bound gold deposit, Chile, and its position in a porphyry copper-gold system: Economic Geology, v. 86, p. 1301–1316. (Also available at http://dx.doi.org/10.2113/gsecongeo.86.6.1301.)Sillitoe, R.H., 1991, Gold metallogeny of Chile—An introduction: Economic Geology, v. 86, p. 1187–1205. (Also available at http://dx.doi.org/10.2113/gsecongeo.86.6.1187.)
Sillitoe, R.H., and Perelló, Jose, 2005, Andean copper province—Tectonomagmatic settings, deposit types, metallogeny, exploration, and discovery, in Hedenquist, J.W., Thompson, J.F.H., Goldfarb, R.J., and Richards, J.P., eds., Economic Geology One Hundredth Anniversary Volume, 1905–2005: Littleton, Colo., Society of Economic Geologists, p. 845–890.
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/.