Porphyry copper deposit in Sinaloa, Mexico

Names and other identifiers

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

Geographic location

Country Mexico
State or province Sinaloa
Geographic location -107.351600247, 25.668443652
Geologic map unit -107.351600247, 25.668443652
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 54Ma
Age determination method Re-Os molybdenite
Age range 57.4 ±0.2 to 50 ±0.3 Ma
Age reference Barra and others (2005)
Minerals biotite, chalcocite, chalcopyrite, chlorite, clay minerals, goethite, hematite, limonite, malachite, magnetite, molybdenite, pyrite, sericite, tourmaline
Associated rocks aplite, diabase dikes, granite, granodiorite, metasedimentary rocks
Tectonic setting continental margin
Stratigraphic age Paleocene–Eocene

Commodity and development information

Development status Prospect
Tonnage (Mt) 50Mt
Cu grade (%) 0.4%
Contained copper 200,000t
Gold-Moly ratio -9999

Reference information

Comments Location uncertain - based on town name only. Not on the 1:250K map. Intrusive rocks at depth; host rock andesitic pyroclastics; jarosite capping from 2 to 3% total sulfides (pyrite, chalcopyrite). Strong fracturing and local brecciation.
Study area name Mexico
References Saldaña-Saucedo and others (1999); Singer and others (2008); Zürcher (2002); Barton and others (1995); Damon, Shafiqullah and Clark (1983); Sillitoe (1976); Barra and others (2005)
Site reference Hammarstrom and others (2010)
Barra, Fernando; Ruiz, Joaquin; Valencia, V.A.; Ochoa-Landín, Lucas; Chesley, J.T., and Zürcher, Lukas, 2005, Laramide porphyry Cu-Mo mineralization in northern Mexico—Age constraints from Re-Os geochronology in molybdenite: Economic Geology, v. 100, p. 1605–1616. (Also available at http://dx.doi.org/10.2113/gsecongeo.100.8.1605.)
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.
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.)
Saldaña-Saucedo, Gutberto, Polanco-Salas, Alfredo, Bataz-Manríquez, Gabriel, and Moreno-López, M.H., 1999, Carta geológico-minera, Pericos G13-7, Sinaloa, Durango, and Chihuahua [Mexico]: Pachuca, Hidalgo, Servicio Geológico Mexicano, 1 sheet, scale 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/.Zürcher, Lukas, 2002, Regional setting and magmatic evolution of Laramide porphyry copper systems in western Mexico: Tucson, University of Arizona, Ph. D. thesis, 427 p. (Also available at http://arizona.openrepository.com/arizona/bitstream/10150/279937/1/azu_td_3050291_sip1_m.pdf.)