Mine detail: Contact District Copper Project

Previously called 'Brooklyn ZoneBanner Fissure ZoneHelen B. Smithold Marshall (Nevada-Bellevue) Mine AreaPhase 1 AreaNevada-BelleviewMarshall GroupPhase 2 AreaBluebirdHelen Smith'

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Location

Lat / long: 41.78047, -114.77728

Resource(B)

Primary: Copper, Silver
Secondary: Gold, Molybdenum
Tertiary: Barium-Barite
Ore: Chalcopyrite, Bornite, Chalcocite, Chrysocolla, Barite, Malachite
Gangue: Quartz
Orebody form: Disseminated, replacement, and vein , Tabular
Discovery year: 1885

Production

Operation type: Surface-Underground
Deposit type: skarn-related porphyry copper; Disseminated, replacement, and vein
Production size: Small
Development status: Past Producer
Production years: 1913-1930; 1952-1957
First production started: 1913

Geology

Host type:Limestone,Shale,Chert,Quartzite,Granodiorite
Associated type:Diorite
Structure:Regular sets of joints, fractures, and faults cut the granodiorite stock.
Alteration processes:Silicification generally accompanies mineralization.

References

DEP10310521
Reference{Deposit:: Smith, R.M. (1976) Mineral Resources of Elko Co., Nev: USGS OFR 76-56, P 39-45}{Deposit:: Schrader, F.C. (1935) The Contact Mining District, Nevada: USGS Bull. 847-A.}{Deposit:: Hope, R.A. & Coats, R.R. (1976) Prelim. Geologic Map of Elko Co., Nev: USGS OFR 76-779}{Deposit:: Granger, A.E., et. al. (1957) Geology and Mineral Resources of Elko Co., Nevada: Nevada Bur. Mines Bull. 54.}{Deposit:: LaPointe, D.D., Tingley, J.V., and Jones, R.B., 1991, Mineral resources of Elko County: Nevada Bureau of Mines and Geology Bulletin 106, 236 p.}{Deposit:: Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Significant deposits of gold, silver, copper, lead, and zinc in the United States: U.S. Geological Survey Open-File Report 90-206A, 33 p.; 98-206B. one 3.5 inch diskette.}{Deposit:: Golden Phoenix Minerals, Inc. press release, 12/7/2004.}{Deposit:: Schrader, F.C. (1912) A Reconn. Of The Jarbidge, Contact, And Elk Mt. Mining Districts, Elko Co., Nevada: USGS Bul 497}{Deposit:: Steininger, R. C., 2000, Western United States; SEG Newsletter, April issue, p. 38.}{Deposit:: Coats, R.R., 1987, Geology of Elko County Nevada: Nevada Bureau of Mines and Geology Bulletin 101, 112 p.}{Deposit:: Wendt, C.J., and Albino, G.V., 1992, Porphyry copper and related occurrences in Nevada: Nevada Bureau of Mines and Geology, Map 100, 8 p. and 1 plate.}
ReporterLaPointe, D.D., Schruben, Paul G., Weimer, Becky S., Jones, David A. (USGS-MIO), Western Field Operations Center (WFOC), Anderson, Claire