Commodities
PrimaryCopper
TertiarySilver, Zinc, Cobalt
Commodity typeM
Deposit
Deposit typevolcanogenic massive sulfide deposit.
Model90: Massive sulfide, Cyprus
Deposit sizeS
WorkingsUnderground
Orebody formstratiform
Materials
Ore mineralsChalcopyrite, Bornite, Digenite, Tenorite, Cuprite, Sphalerite
GanguePyrite
Geology
Host rockChert,Greenstone,Argillite,Sedimentary Rock · Pumpernickel Unit of the Havallah sequence
Economic & production
Development statusPast Producer
Production years1966; 1970; 1971-1974; 1978-1979
First production1966
Last production1979
Discovery year1930
Identification
Deposit ID10310578
MRDS IDM060499
Alternate namesNBMG Sample Site 2342
RegionNA
Data scoreB
Coordinates40.5433, -117.5603
References
Johnson, Maureen G., 1977, Geology and Mineral Deposits of Pershing County, Nevada' Reno: Nevada Bureau of Mines and Geology Bulletin 89, 115p.Engineering Mining Journal, 1971, 1973.Rye, R.O., et al., 1984, Economic Geology, volume 79, p. 124-140.Garside, L.J., 11 Sep 84, NBMG Field Examination and sample analysis.NBMG Staff, 1985, NBMG 85-3.Snyder, W.S., 1977, Ms Thesis, University Of Nevada-Reno.Hart, D.D., 1977, Unpublished report on ores of Big Mike Mine, NBMG Mining District File 270, Item # 11.Carithers, W. and Forbes, J.M., 1969, Unpublished report on Big Mike Property; NBMG File 270, Items #12 and #13.Intermountain Pay Dirt, Oct 1984,GoldSpring, Inc. press release, 11/1/05.Techncial report at http://www.goldspring.us/mike.htm