Cobre Rico

Porphyry copper prospect in Sonora, Mexico

Names and other identifiers

Alternate names Cumpas
Tract name Western Sierra Madre Occidental and Laramide Central (003pCu3007x)
Site status prospect

Geographic location

Country Mexico
State or province Sonora
Geographic location -109.985413652, 29.876695887
Geologic map unit -109.985413652, 29.876695887
Nearby data

Geologic information

Deposit type Porphyry copper
Age determination method Geologic inference
Age range ~80–35 Ma(?) (Laramide orogeny(?))
Age reference geologic inference
Minerals chalcopyrite, molybdenite
Associated rocks collapse breccia within volcanics
Tectonic setting continental margin
Stratigraphic age Late Cretaceous–Paleocene–Eocene(?)

Commodity and development information

Development status Occurrence
Major commodities Mo, Cu
Gold-Moly ratio -9999

Reference information

Comments Cumobabi area: molybdenite and chalcopyrite in collapse breccia within volcanics; in an alteration zone (sericitic, propylitic). Historical mining in the area.
Study area name Mexico
References Scherkenbach and others (1985); Pérez-Segura (1985); Cendejas and Barcenas (1978); Guzmán-Espinosa and others (1999); Valencia-Moreno and others (2007); U.S. Geological Survey (2007)
Site reference Hammarstrom and others (2010)
Cendejas F.C., and Barcenas, R.A., 1978, Geologia de la region cuprifera del Transvaal, Municipio de Cumpas, Sonora: Primero Simposio Sobre La Geologia Y Potencial Minero Del Estado De Sonora, Resumenes 1, Hermosillo, Mexico, p. 27–29.
Guzmán-Espinosa, J.B., García-Cortés, J.A., Gutiérrez-Macillas, A.A., García-Duarte, Rodolfo, and Salazar-Velázquez, Ramón, 1999, Carta geológico-minera, Madrera H12-9, Sonora and Chihuahua [Mexico]: Pachuca, Hidalgo, Servicio Geológico Mexicano, 1 sheet, scale 1:250,000.
Pérez-Segura, E., 1985, Carta Metalogenética de Sonora 1:250,000—Una interpretación de la metalogenia de Sonora: Gobierno del Estado de Sonora Publicación 7, 64 p.
Scherkenbach, D.A., Sawkins, F.J., and Seyfried, W.E., Jr., 1985, Geologic, fluid inclusions and geochemical studies of the mineralized breccias at Cumobabi, Sonora, Mexico: Economic Geology, v. 80, p. 1566–1592. (Also available at Geological Survey, 2007, Mineral Resources Data System (MRDS): U.S. Geological Survey database, accessed December 15, 2007, at, M., Ochoa-Landín, Lucas, Noguez-Alcántara, Benito, Ruiz, Joaquin, Pérez-Segura, Efrén, 2007, Geological and metallogenetic characteristics of the porphyry copper deposits of México and their situation in the world context, in Alaniz-Álvarez, S.A., and Nieto-Samaniego, Á.F., eds., Geology of México—Celebrating the centenary of the Geological Society of México: Geological Society of America Special Paper 422, p. 433–458. (Also available at