Hanover Mountain

Porphyry copper deposit in New Mexico, United States

Names and other identifiers

GMRAP ID 85
Alternate names Hanover-Fierro
Tract name Southwest Laramide East (003pCu9008)
Included sites Continental pit
Site status deposit

Geographic location

Country United States
State or province New Mexico
Geographic location -108.090555556, 32.846388889
Geologic map unit -108.090555556, 32.846388889
Nearby data

Geologic information

Deposit type Porphyry copper
Age (Ma) 64Ma
Age determination method unknown
Age range 70–57 Ma
Age reference Singer and others (2008)
Minerals biotite, chalcocite, chalcopyrite, chlorite, cupriferous pyrite, epidote, galena, hematite, limonite, magnetite, pyrite, sericite, sphalerite
Associated rocks andesite dike, basalt dike, breccia, gabbro, granodiorite porphyry, quartz diorite porphyry, quartz monzonite porphyry, skarn, syenodiorite porphyry, andesite breccia, conglomerate, dolomite, felsic volcanic rocks, granodiorite, hornfels, limestone, marble, quartz monzonite, quartzite, sandstone, shale, siltstone, skarn
Tectonic setting continental margin
Stratigraphic age Late Cretaceous–Paleocene

Commodity and development information

Development status Occurrence
Major commodities Cu
Tonnage (Mt) 1,406Mt
Cu grade (%) 0.34%
Au grade (g/t) 0.01g/t
Ag grade (g/t) 9.5g/t
Contained copper 4,800,000t
Gold-Moly ratio -9999

Reference information

Comments Resources probably include adjoining replacement and skarn mineralization. Exposed.
Study area name United States
References Einaudi (1982); Hillesland and others (1995); North and McLemore (1988); Richter and Lawrence (1983); Singer and others (2008)
Site reference U.S. Geological Survey National Mineral Resource Assessment Team (2002)
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.
Hillesland, L.L., Hawkins, R.B., and Worthington, W.T., 1995, The geology and mineralization of Continental mine area, Grant County, New Mexico, in Pierce, F.W., and Bolm, J.G., eds., Porphyry copper deposits of the American Cordillera: Tucson, Arizona Geological Society Digest 20, p. 473–483.
North, R.M., and McLemore, V.T., 1988, A classification of the precious metal deposits of New Mexico, in Schafer, R.W., Cooper, J.J., and Vikre, P.G., eds., Bulk mineable precious metal deposits of the western United States: Geological Society of Nevada Symposium, Reno, April 6–8, 1987 [Proceedings], p. 625–659.
Richter, D.H., and Lawrence, V.A., 1983, Mineral deposit map of the Silver City 1o x 2o quadrangle, New Mexico and Arizona: U.S. Geological Survey Miscellaneous Investigations Map I-1310-B, 70 p. and 1 sheet. (Also available at http://pubs.usgs.gov/imap/1310b/report.pdf and at http://pubs.usgs.gov/imap/1310b/plate-1.pdf.)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/.