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La Caridad

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Porphyry copper deposit in Sonora, Mexico

Names and other identifiers

GMRAP ID 182
Tract name Western Sierra Madre Occidental and Laramide Central (003pCu3007x)
Site status deposit

Geographic location

Country Mexico
State or province Sonora
Geographic location -109.559412055, 30.314444862
Geologic map unit -109.559412055, 30.314444862
Nearby data
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Geologic information

Deposit type Porphyry copper
Age (Ma) 53.7Ma
Age determination method Re-Os molybdenite (average)
Age range 53.8 ±0.3 to 53.6 ±0.3 Ma
Age reference Valencia and others (2005)
Minerals biotite, bornite, chalcocite, chalcopyrite, chrysocolla, chlorite, epidote, ferrimolybdite, galena, goethite/limonite, hematite, jarosite, kaolinite, malachite, molybdenite, neotocite, pyrite, sericite, sphalerite, tourmaline
Associated rocks breccia, pegmatite, quartz monzonite porphyry
Tectonic setting continental margin
Stratigraphic age Eocene

Commodity and development information

Development status Producer
Tonnage (Mt) 1,800Mt
Cu grade (%) 0.452%
Mo grade (%) 0.0247%
Contained copper 8,100,000t
Gold-Moly ratio -9999

Reference information

Comments Exposed. Alteration: argillization-oxidation.
Study area name Mexico
References Palafox-Reyes and others (1998); Singer and others (2008); U.S. Geological Survey (2007); Valencia and others (2005); Damon, Shafiqullah and Clark (1983); Long (1995)
Site reference Hammarstrom and others (2010)
Damon, P.E., Shafiqullah, Muhammad, and Clark, K.F., 1983, Geochronology of the porphyry copper deposits and related mineralization of Mexico: Canadian Journal of Earth Sciences, v. 20 p. 1052–1071. (Also available at http://dx.doi.org/10.1139/e83-095.)
Long, K.R., 1995, Production and reserves of Cordilleran (Alaska to Chile) porphyry copper deposits, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20, p. 35–68.
Palafox-Reyes, J.J., Minjarez-Sosa, Ismael, Saavedra-Monreal, Rogelio, Alamazán-Vázquez, Emelio, Morales-Montaño, Mariano, Ochoa-Landin-L.H., Rodríguez-Torres, Rafael, Rivera-Enriquez, Braulio, Castro-Escarrega, J.J., and Zamora-Tovar, R.E., 1998, Carta geológico-minera, Nacozari H12-6, Sonora [Mexico]: Pachuca, Hidalgo, Servicio Geológico Mexicano, 1 sheet, scale 1:250,000.
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/.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/.U.S. Geological Survey, 2007, Mineral Resources Data System (MRDS): U.S. Geological Survey database, accessed December 15, 2007, at http://tin.er.usgs.gov/mrds/.Valencia, V.A., Ruiz, J., Barra, F., Geherls, G., Ducea, M., Titley, S.R., Ochoa-Landín, L., 2005, U-Pb zircon and Re-Os molybdenite geochronology from La Caridad porphyry copper deposit—Insights for the duration of magmatism and mineralization in the Nacozary district, Sonora, Mexico: Mineralium Deposita, v. 40, p. 175–191. (Also available at http://dx.doi.org/10.1007/s00126-005-0480-1.)