La Verde

Porphyry copper deposit in Michoacán, Mexico

Names and other identifiers

GMRAP ID 194
Tract name Southwest Mexico (003pCu3011)
Site status deposit

Geographic location

Country Mexico
State or province Michoacán
Geographic location -102.034868077, 19.083694635
Geologic map unit -102.034868077, 19.083694635
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 33.4Ma
Age determination method K-Ar hornblende
Age range 33.4 ±0.7 Ma
Age reference Damon, Shafiqullah and Clark (1983)
Minerals albite, anhydrite/gypsum, arsenopyrite, azurite/malachite, bornite, calcite, chalcocite/digenite, chalcopyrite, chlorite, chrysocolla, epidote, goethite, hematite/specularite, limonite, molybdenite, montmorillonite, sericite, pyrite, pyrrhotite, tennantite, tourmaline
Associated rocks andesite flow, andesite pyroclastics, diorite, diorite porphyry, rhyolite
Tectonic setting continental margin
Stratigraphic age Eocene–Oligocene

Commodity and development information

Development status Past Producer
Major commodities Cu, Mo
Tonnage (Mt) 110Mt
Cu grade (%) 0.7%
Au grade (g/t) 0.088g/t
Ag grade (g/t) 2.5g/t
Contained copper 770,000t
Gold-Moly ratio -9999

Reference information

Comments Stockwork, porphyry-copper type mineralization. Reserves on the order of 19 Mt of 1.21% Cu. Location based on map E13-3. Alteration: unknown.
Study area name Mexico
References Barton and others (1995); Coochey and Eckman (1978); Damon, Shafiqullah and Clark (1983); Long (1995); Sillitoe (1976); Solano-Rico (1995); Rosas-Elguera and others (1999); Singer and others (2008); Servicio Geológico Mexicano (2007)
Site reference Hammarstrom and others (2010)
Barton, M.D., Staude, J.-M.G., Zürcher, L., and Megaw, P.K.M., 1995, Porphyry copper and other intrusion-related mineralization in Mexico, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest, v.20, p.487–524.
Coochey, D.V., and Eckman, P., 1978, Geology of the La Verde copper deposits, Michoacan, Mexico, in Jenney, J.P. and Hauck, H.R., eds., Proceedings of the porphyry copper symposium: Arizona Geological Society Digest. v. 11, p. 129–137.
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.
Rosas-Elguera, José, Hernández-Berrera, David, Pérez-Rodríguez, Gerardo, Valladolid-Cacho, Rafael, Tortoledo-Vázques, Rafael, and Ramírez-Romo, Julio, 1999, Carta geológico-minera, Colima E13-3, Colima, Jalisco, and Michoacán. [Mexico]: Pachuca, Hidalgo, Servicio Geológico Mexicano, 1 sheet, scale 1:250,000.
Servicio Geológico Mexicano, 2007, Base de datos de mineral de cobre de la cartografìa geològico minera: Subdirección de Geociencia Digital y Documentación Tècnica, 1:250,000.
Sillitoe, R.H., 1976, A reconnaissance of the Mexican porphyry copper belt: Institutions of Mining and Metallurgy Transactions, Section B—Applied Earth Science, v. 85, p. B170–B189.
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/.
Solano-Rico, B., 1995, Some geologic and exploration characteristics of porphyry copper deposits in the Sierra Madre del Sur province, Mexico, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest, v. 20, p. 545–550.