Porphyry copper (Cu-Au) deposit in Nevada, United States

Names and other identifiers

Alternate names Cuervo, Sul
Tract name Sierran Arc (003pCu9007)
Site status deposit

Geographic location

Country United States
State or province Nevada
Geographic location -117.95, 38.78
Geologic map unit -117.95, 38.78
Nearby data

Geologic information

Deposit type Porphyry copper
Deposit subtype Cu-Au
Age (Ma) 81Ma
Age determination method unknown
Age range 81 Ma
Age reference Singer and others (2008)
Minerals azurite/malachite, chalcopyrite, epidote, pyrite
Associated rocks agglomerate, andesite, conglomerate, granite, quartzite, rhyolite, sandstone, siltstone
Tectonic setting mixed
Stratigraphic age Late Cretaceous

Commodity and development information

Development status Past Producer
Major commodities Cu, Au, Ag
Tonnage (Mt) 23Mt
Cu grade (%) 0.33%
Au grade (g/t) 0.58g/t
Contained copper 76,000t
Gold-Moly ratio -9999

Reference information

Comments The Sullivan deposit, also known as Cuervo, is about 4 km northeast of the Paradise Peak epithermal gold deposit and is exposed beneath a pediment surface where bedrock is mostly concealed by shallow alluvium. The deposit is a vein stockwork hosted in Late Cretaceous-age quartz monzonite porphyry. The veins contain copper, gold, and silver. Glamis Gold Ltd. mined the deposit for a short time in the late 1980s. The resource announced at the time was about 9 million tons at 0.37 percent Cu, 1.3 g/t gold, and 2.9 g/t Ag (Craig and others, 1992).
Study area name United States
References Kleinhampl and Ziony (1984); Ludington and others (2009); Craig and others (1992); Singer and others (2008)
Site reference U.S. Geological Survey National Mineral Resource Assessment Team (2002)
Craig, S.D., Oldow, J.S., dePolo, C.M., Hardyman, R.A., and John, D.A., 1992, Road log from Luning to Westgate via Mina and Gabbs, in Craig, S.D., ed., Hawthorne area-central Walker Lane structure and tectonics: Geological Society of Nevada Special Publication 14, Walker Lane Symposium, April 25–26, 1992 [Spring Field Trip Guidebook], p. 69–[?].
Kleinhampl, F.J., and Ziony, J.I., 1984, Mineral resources of northern Nye County, Nevada: Reno, Nevada Bureau of Mines and Geology Bulletin 99B, 243 p.
Ludington, Steve, John, D.A., Muntean, J.L., Hanson, A.D., Castor, S.B., Henry, C.D., Wintzer, Niki, Cline, J.S., and Simon, A.C., 2009, Mineral-resource assessment of northern Nye County, Nevada—A progress report: U.S. Geological Survey Open-File Report 2009-1271, 13 p. (Also available at, 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