Mine detail: Horse Canyon Mine

Previously called 'Cortez Joint VentureHorse Canyon pitSouth Silicified pit'

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Location

Lat / long: 40.15991, -116.56342

Resource(B)

Primary: Gold
Secondary: Silver
Tertiary: Barium-Barite
Ore: Gold, Barite
Gangue: Quartz, Clay, Jarosite, Pyrite
Orebody form: tabular to irregular
Discovery year: 1976

Production

Operation type: Surface
Deposit type: disseminated/thrust fault
Production size: Small
Development status: Past Producer
Production years: 1983-1993
First production started: 1983
Last production ended: 1993

Geology

Host rock:Vinini Formation, Wenban Limestone
Host type:Shale
Associated type:Rhyolite
Structure:Roberts Mountains Thrust; Cortez Window, high angle faulting; fractures; folding
Alteration processes:silicification, bleaching, clay alteration

References

MRDSM242255
MAS320110228
DEP10310318
Reference{Deposit:: Bonham, H.F., 1988, in NBMG MI-1987.}{Deposit:: Bonham, H.F., 1986, NBMG Map 91.}{Deposit:: Foo, S.T., and Hebert, J. P., 1987, Geology of the Horse Canyon Deposit, Eureka County, Nevada, in Johnson, J. L., ed., Guidebook for Field Trips, Bulk Mineable Precious Metal Deposits of the Western United States, Geological Society of Nevada Symposium, April 6-8, 1988, Reno, Nevada. p. 326.}{Deposit:: Long, K.R., DeYoung, J.H., Jr., and Ludington, S.D., 1998, Database of significant deposits of gold, silver, copper, lead, and zinc in the United States; Part A, Database description and analysis; part B, Digital database: U.S. Geological Survey Open-File Report 98-206, 33 p., one 3.5 inch diskette.}{Deposit:: BLM, Sept., 2004, Horse Canyon/Cortez Unified Exploration Project II Environmental Assessment NV063-EA04-61.}{Deposit:: NBMG MI-82 through MI-84; MI-86 thru MI-02;}{Deposit:: NBMG Map 91, 1st, 2nd, 3rd;}{Deposit:: NBMG OFR 83-9;}{Deposit:: MASMILS 0320110228;}{Deposit:: Crescent Valley Land Status, 1979;}{Deposit:: Amer. Mines (1989), 1989;}{Deposit:: Amer. Mines (1990), 1990;}{Deposit:: Amer. Mines (1991-92), 1991;}{Deposit:: EA, 2000;}{Deposit:: Adella Harding, Elko Daily Free Press, 11/23/02.}{Deposit:: www.placerdome.com}{Deposit:: Bentz, J., Bonham, H., Tingley, J.V., Smith, P., 1982, Field Examination Report, 7/82.}{Deposit:: Unpublished report by Cortez Gold Mines, 1983}{Deposit:: NBMG Mining District File 109, Numerous Clippings. 332}{Deposit:: McCormack, John K., 1991, written communication}
ReporterLaPointe, D. D. , Schruben, Paul G.