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Inguarán

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Porphyry copper prospect in Michoacán, Mexico

Names and other identifiers

GMRAP ID 196
Tract name Southwest Mexico (003pCu3011)
Site status prospect

Geographic location

Country Mexico
State or province Michoacán
Geographic location -101.660535906, 18.885963321
Geologic map unit -101.660535906, 18.885963321
Nearby data
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Geologic information

Deposit type Porphyry copper
Age (Ma) 35.6Ma
Age determination method K-Ar biotite
Age range 35.6 ±0.8 Ma
Age reference Damon, Shafiqullah and Clark (1983)
Minerals actinolite, biotite, calcite, chalcocite, chalcopyrite, chlorite, epidote, goethite, pyrite, scheelite, sericite, tourmaline
Associated rocks breccia, quartz monzonite porphyry
Tectonic setting continental margin
Stratigraphic age Eocene

Commodity and development information

Development status Past Producer
Major commodities Cu
Gold-Moly ratio -9999

Reference information

Comments Rome Resources Ltd. (2008) Inguarán Valley porphyry Cu-W Project surrounds the Inguarán copper mine; geochemistry, geophysics, and drilling indicate prospectivity for a 50 to 100 Mt low-grade porphyry copper deposit. Past production from breccia zones at the Inguarán copper mine operated by ASARCO in the 1970s and early 1980s: ~10 Mt at 1.29% Cu and 0.04% WO3 was mined. Included as a deposit in Singer and others (2008); however, reported resources are for breccia zones which may overlie a larger porphyry system. Location based on map E14-4. Within a ~ 20 km zone of alteration that includes Esmeralda (6 km to N), Manga de Cuimbo (3 km SW), and El Algodon (13 km SW). Alteration: oxidation-silicification.
Study area name Mexico
References Montiel-Escobar and others (2003); Rome Resources Ltd. (2008); Singer and others (2008); Damon, Shafiqullah and Clark (1983)
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.)
Montiel-Escobar, J.E., Segura-De La Teja, M.A., Estrada-Rodarte, Graciela, Cruz-Lopez, D.E, and Rosales-Franco, Enrique, 2003, Carta geológico-minera, Ciudad Altamirano E14-4, Michoacán, Guerrero and Edo. De Méx. [Mexico]: Pachuca, Hidalgo, Servicio Geológico Mexicano, 1 sheet, scale 1:250,000.
Rome Resources Ltd., 2008, Inguaran-Michoacán, Mexico: Rome Resources Ltd. Web page accessed June 11, 2008, at http://www.romeresources.com/en/projects/mexican/.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/.