Mine detail: Douglas Group

Previously called 'Gold Range District.Incluede Grassi, Mary, Hardluck, Orphan Boy, Juniper, Snowball, Gem,Pepper, Roosevelt, Little Chief, Bounce, Oriole, New Party Veins'

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Location

Lat / long:

38.33882, -118.19623

Resource(M)

Primary:	Gold, Silver
Tertiary:	Lead
Ore:	Galena, Silver, Tetrahedrite
Gangue:	Calcite, Quartz
Orebody form:	LINEAR
Discovery year:	1893

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer

Geology

Host rock:	Excelsior;Dunlap
Host type:	Clastic Sedimentary Rock,Andesite
Associated rock:	Andesite
Associated type:	Andesite
Structure:	Ne-Trending Faults, North-Northwest-Trending Fault System Folds
Alteration processes:	Silicification, Argillization, Fe-Staining

References

MRDS	M233004
DEP	10045304
Reference	{Deposit:: ROSS, D.C., 1961, GEOLOGY AND MINERAL DEPOSITS OF MINERAL COUNTY, NEVADA: NBMG BULL.58}{Deposit:: HILL, J.M., 1915, SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN NEVADA: USGS BULL. 594.}{Deposit:: VANDERBURG, W.O., 1937, RECONNAISSANCE OF MINING DISTRICTS IN MINERAL COUNTY, NEVADA: U.S. BUREAU OF MINES INF. CIRC. 6941, 79P.}{Deposit:: FERGUSON, H.G., MULLER, S.W., AND CATHCART, S.H., 1954, GEOLOGIC MAP OF THE MINA QUADRANGLE, NEVADA: USGS GEOL. QUAD MAP SERIES, GQ 45.}{Deposit:: JARSIDE, L.J., 1979, GEOLOGY OF THE CAMP DOUGLAS QUADRANGLE, MINERAL COUNTY, NEVADA(UNPUB.): NBMG FILES}{Production:: ROSS, D.C., 1961, TABLE 6.7}
Reporter	Flynn, Patricia D. (Tingley, J. V.)