Yerington

Porphyry copper deposit in Nevada, United States

Names and other identifiers

GMRAP ID 45
Tract name Western U.S. and Sonoran Desert Jurassic Arc (003pCu9006x)
Site status deposit

Geographic location

Country United States
State or province Nevada
Geographic location -119.2, 38.98
Geologic map unit -119.2, 38.98
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 167Ma
Age determination method unknown
Age range 169–165 Ma
Age reference Singer and others (2008)
Minerals actinolite, albite, biotite, bornite, chalcopyrite, chlorite, epidote, hematite, magnetite, molybdenite, pyrite, rutile, sericite, tourmaline
Associated rocks andesite dike, granite porphyry, rhyolite dike, andesite, argillite, gypsum, ignimbrite, limestone, rhyolite, sandstone, volcaniclastic rocks, breccia, granite, quartz monzonite, quartz monzodiorite, skarn
Tectonic setting mixed
Stratigraphic age Middle Jurassic

Commodity and development information

Development status Occurrence
Major commodities Cu
Tonnage (Mt) 928Mt
Cu grade (%) 0.514%
Au grade (g/t) 0.046g/t
Ag grade (g/t) 1.85g/t
Contained copper 4,770,000t
Gold-Moly ratio -9999

Reference information

Study area name United States
References Albino (1995); Dilles (1987); Dilles and others (2000); Dilles and Proffett (1995); Einaudi (1982); Long (1995); Proffett (1977); Singer and others (2008)
Site reference U.S. Geological Survey National Mineral Resource Assessment Team (2002)
Albino, G.V., 1995, Porphyry copper deposits of the Great Basin—Nevada, Utah, and adjacent California, in Pierce, F.W., and Bolm, J.G., eds, Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20, p. 267–296.
Dilles, J.H., 1987, Petrology of the Yerington batholith, Nevada—Evidence for evolution of porphyry copper ore fluids: Economic Geology, v. 82, p. 1750–1789. (Also available at http://dx.doi.org/10.2113/gsecongeo.82.7.1750.)
Dilles, J.H., Einaudi, M.T., Proffett, J.M., and Barton, M.D., 2000, Overview of the Yerington porphyry copper district: magmatic to nonmagmatic sources of hydrothermal fluids—Their flow path and alteration effects on rocks and Cu-Mo-Fe-Au ores, in Dilles, J.H., Barton, M.D., Johnson, D.A., Proffett, J.M., and Einaudi, M.T., eds., Contrasting styles of intrusion-associated hydrothermal systems: Society of Economic Geologists Guidebook, v. 32, p. 55–66.
Dilles, J.H., and Proffett, J.M., 1995, Metallogenesis of the Yerington batholith, Nevada, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20, p. 306–315.
Einaudi, M.T., 1982, Description of skarns associated with porphyry copper plutons, southwestern North America, in Titley, S.R., ed., Advances in geology of the porphyry copper deposits, southwestern North America: Tucson, University of Arizona Press, p. 139–183.
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.
Proffett, J.M., Jr., 1977, Cenozoic geology of the Yerington district, Nevada, and implications for the nature and origin of Basin and Range faulting: Geological Society of America Bulletin, v. 88, p. 247–266. (Also available at http://dx.doi.org/10.1130/0016-7606(1977)88<247:CGOTYD>2.0.CO;2.)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/.