The Douglas Group is a silver and gold mine located in Mineral county, Nevada.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Douglas Group MRDS details
Site Name
Primary: Douglas Group
Secondary: Incluede Grassi, Mary, Hardluck, Orphan Boy, Juniper, Snowball, Gem,
Secondary: Pepper, Roosevelt, Little Chief, Bounce, Oriole, New Party Veins
Secondary: Gold Range District.
Commodity
Primary: Silver
Primary: Gold
Tertiary: Lead
Location
State: Nevada
County: Mineral
District: Silver Star District
Land Status
Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1893
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Great Basin
Physiographic Detail: Excelsior Mountains
Mineral Deposit Model
Model Name: Epithermal vein, Comstock
Orebody
Form: LINEAR
Structure
Type: R
Description: Ne-Trending Faults
Type: L
Description: North-Northwest-Trending Fault System Folds
Alterations
Alteration Type: L
Alteration Text: Silicification, Argillization, Fe-Staining
Rocks
Name: Andesite
Role: Associated
Age Type: Associated Rock Unit
Age Young: Pliocene
Name: Andesite
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Analytical Data
Not available
Materials
Ore: Galena
Ore: Tetrahedrite
Ore: Silver
Gangue: Calcite
Gangue: Quartz
Comments
Comment (Geology): THE VEINS HAVE CLEAN, SHARP CONTACTS WITH CLASTIC ROCKS OF THE DUNLAP AND EXCELSIOR FORMATIONS. THE VOLCANIC ROCKS TO THE EAST, CONTAINING FREE GOLD, ARE HYDROTHERMALLY ALTERED, CONTAIN QUARTZ MASSES AND ARE POSSIBLY POST-ESMERALDA IN AGE
Comment (Location): INFO FROM LAND.ST :(1972); 1:24000 QUADRANGLE IS A 1967) EDITION
Comment (Production): $500,000(1893-1903). TOTAL PRODUCTION ABOUT $2,000,000.
Comment (Development): MINING ACTIVITY CENTERED IN THE CAMPT DOUGLAS AREA BETWEEN 1893 AND 1903.
Comment (Deposit): EAST-TRENDING VEINS FROM A FRACTION OF AN INCH TO 13 FT THICK (BOUNCE, SNOW BALL, JUPITER MARY VEINS) IN ANOTHER TYPE (ROOSEVELT), FREE GOLD IS PRESENT IN CRUSHED, HYDROTHERMALLY ALTERED ANDESITIC ROCK.
Comment (Workings): NUMEROUS ADITS AND SHAFTS ON THE SEVERAL VEINS. PRINCIPAL DEVELOPMENT IS ON THEBOUNCE VEIN.
References
Reference (Production): ROSS, D.C., 1961, TABLE 6.7
Reference (Deposit): JARSIDE, L.J., 1979, GEOLOGY OF THE CAMP DOUGLAS QUADRANGLE, MINERAL COUNTY, NEVADA(UNPUB.): NBMG FILES
Reference (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.
Reference (Deposit): VANDERBURG, W.O., 1937, RECONNAISSANCE OF MINING DISTRICTS IN MINERAL COUNTY, NEVADA: U.S. BUREAU OF MINES INF. CIRC. 6941, 79P.
Reference (Deposit): HILL, J.M., 1915, SOME MINING DISTRICTS IN NORTHEASTERN CALIFORNIA AND NORTHWESTERN NEVADA: USGS BULL. 594.
Reference (Deposit): ROSS, D.C., 1961, GEOLOGY AND MINERAL DEPOSITS OF MINERAL COUNTY, NEVADA: NBMG BULL.58
Nevada Gold
Nevada has a total of 368 distinct gold districts. Of the of those, just 36 are major producers with production and/or reserves of over 1,000,000 ounces, 49 have production and/or reserves of over 100,000 ounces, with the rest having less than 100,000 ounces. Read more: Gold Districts of Nevada.
