Porphyry copper deposit in Arizona, United States

Names and other identifiers

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

Geographic location

Country United States
State or province Arizona
Geographic location -111.816111111, 32.954722222
Geologic map unit -111.816111111, 32.954722222
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 63Ma
Age determination method unknown
Age range 65–61 Ma
Age reference Singer and others (2008)
Minerals alunite, anhydrite/gypsum, azurite/malachite, biotite, bornite, brochantite, chalcocite, chalcopyrite, chlorite, chrysocolla, copper, covellite, cuprite, goethite/limonite, hematite/specularite, jarosite, kaolinite, magnetite, molybdenite, pyrite, sericite, sphalerite
Associated rocks breccia, dacite porphyry, monzonite porphyry, quartz monzonite porphyry, limestone, quartzite, schist, conglomerate, diabase dike, diorite, granite
Tectonic setting continental margin
Stratigraphic age Paleocene

Commodity and development information

Development status Occurrence
Major commodities Cu
Tonnage (Mt) 49Mt
Cu grade (%) 0.72%
Mo grade (%) 0.014%
Ag grade (g/t) 2g/t
Contained copper 350,000t
Gold-Moly ratio -9999

Reference information

Comments 100% covered.
Study area name United States
References Cummings (1982); Singer and others (2008)
Site reference U.S. Geological Survey National Mineral Resource Assessment Team (2002)
Cummings, R.B., 1982, Geology of Sacaton porphyry copper deposit, Pinal county, Arizona, in Titley, S.R., ed., Advances in geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 507–521.
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