Mine detail: Big Mike Copper Mine

Previously called 'NBMG Sample Site 2342'

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Location

Lat / long: 40.5433, -117.5603

Resource(M)

Primary: Copper
Tertiary: Silver, Zinc, Cobalt
Ore: Chalcopyrite, Bornite, Digenite, Tenorite, Cuprite, Sphalerite
Gangue: Pyrite
Orebody form: stratiform
Discovery year: 1930

Production

Operation type: Surface
Deposit type: volcanogenic massive sulfide deposit.
Production size: Small
Development status: Past Producer
Production years: 1966; 1970; 1971-1974; 1978-1979
First production started: 1966
Last production ended: 1979

Geology

Host rock:Pumpernickel Unit of the Havallah sequence
Host type:Chert,Greenstone,Argillite,Sedimentary Rock

References

MRDSM060499
DEP10310578
Reference{Deposit:: Johnson, Maureen G., 1977, Geology and Mineral Deposits of Pershing County, Nevad*Reno: Nevada Bureau of Mines and Geology Bulletin 89, 115p.}{Deposit:: Engineering Mining Journal, 1971, 1973.}{Deposit:: Rye, R.O., et al., 1984, Economic Geology, volume 79, p. 124-140.}{Deposit:: Garside, L.J., 11 Sep 84, NBMG Field Examination and sample analysis.}{Deposit:: NBMG Staff, 1985, NBMG 85-3.}{Deposit:: Snyder, W.S., 1977, Ms Thesis, University Of Nevada-Reno.}{Deposit:: Hart, D.D., 1977, Unpublished report on ores of Big Mike Mine, NBMG Mining District File 270, Item # 11.}{Deposit:: Carithers, W. and Forbes, J.M., 1969, Unpublished report on Big Mike Property; NBMG File 270, Items #12 and #13.}{Deposit:: Intermountain Pay Dirt, Oct 1984,}{Deposit:: GoldSpring, Inc. press release, 11/1/05.}{Deposit:: Techncial report at http://www.goldspring.us/mike.htm}
ReporterHarner, Joy L. (Roberts, Ralph J.), La Pointe, D.D., Linne, James M., LaPointe, D.D., Schruben, Paul G.