Miami-Inspiration

Porphyry copper (Cu-Mo) deposit in Arizona, United States

Names and other identifiers

GMRAP ID 62
Tract name Western Sierra Madre Occidental and Laramide Central (003pCu3007x)
Included sites Bluebird, Copper Cities, Globe, Van Dyke
Site status deposit

Geographic location

Country United States
State or province Arizona
Geographic location -110.875399558, 33.408255012
Geologic map unit -110.875399558, 33.408255012
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Mo
Age (Ma) 64Ma
Age determination method unknown
Age range 64–63 Ma
Age reference Singer and others (2008)
Minerals atacamite, azurite/malachite, biotite, bornite, brochantite, chalcanthite, chalcocite, chalcopyrite, chlorite, chrysocolla, copper, covellite, cuprite, epidote, galena, kaolinite, limonite, molybdenite, palygorskite, powellite, pyrite, sericite, sphalerite, turquoise
Associated rocks aplite, granite porphyry, quartz monzonite porphyry, conglomerate, dacite, diabase, limestone, quartz monzonite, schist
Tectonic setting continental margin
Stratigraphic age Paleocene

Commodity and development information

Development status Producer
Major commodities Cu
Tonnage (Mt) 1,591Mt
Cu grade (%) 0.63%
Mo grade (%) 0.01%
Au grade (g/t) 0.009g/t
Ag grade (g/t) 0.7g/t
Contained copper 10,000,000t
Gold-Moly ratio 0.9

Reference information

Comments 20% covered.
Study area name United States
References Creasey (1980); Long (1995); Olmstead and Johnson (1966); Peterson (1954); Peterson (1962); Simmons and Fowells (1966); Singer and others (2008)
Site reference U.S. Geological Survey National Mineral Resource Assessment Team (2002)
Creasey, S.C., 1980, Chronology of intrusion and deposition of porphyry copper ores, Globe-Miami district, Arizona: Economic Geology, v. 75, p. 830–844. (Also available at http://dx.doi.org/10.2113/gsecongeo.75.6.830.)
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.
Olmstead, H.W., and Johnson, D.W., 1966, Inspiration geology, in Titley, S.R., and Hicks, C.L., eds., Geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 143–150.
Peterson, N.P., 1954, Copper Cities copper deposit, Globe-Miami district, Arizona: Economic Geology, v. 49, p. 362–377. (Also available at http://dx.doi.org/10.2113/gsecongeo.49.4.362.)Peterson, N.P., 1962, Geology and ore deposits of the Globe-Miami district, Arizona: U.S. Geological Survey Professional Paper 342, 151 p., 8 plates, scale 1: . (Also available at http://pubs.er.usgs.gov/publication/pp342.)
Simmons, W.W., and Fowells, J.E., 1966, Geology of the Copper Cities mine, in Titley, S.R., and Hicks, C.L., eds., Geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 151–156.
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/.