The Belmont - Osborne Mine is a gold mine located in Calaveras county, California at an elevation of 1,401 feet.
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
Elevation: 1,401 Feet (427 Meters)
Commodity: Gold
Lat, Long: 38.07722, -120.57972
Map: View on Google Maps
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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.
Belmont - Osborne Mine MRDS details
Site Name
Primary: Belmont - Osborne Mine
Secondary: Knox
Secondary: Osborne Consolidated Osborne
Commodity
Primary: Gold
Location
State: California
County: Calaveras
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Gangue: Quartz
Gangue: Calcite
Comments
Comment (Geology): GEOL.DESC: AT LEAST 4 PARALLEL VEINS ARE PRESENT IN A ZONE 75 FT WIDE AND STRIKE FROM N 42 W TO N 55 W. VEINS ARE FROM 4 TO 12 FT WIDE. SOME OF COUNTRY ROCK CONTAINS DISSEMINATED PYRITE. FOOTWALL AMPHIBOLITE SCHIST, HANGING WALL BLACK SLATE AND PHYLLITE. VEINS CONTAIN QUARTZ, CALCITE AND AMPHIBOLITE SCHIST. TWO SYSTEMS OF STRINGERS OF VEIN, ONE PARALLEL SCHISTOSITY THE OTHER ALMOST PERPENDICULAR. MINE ON WESTERN MINERALIZED ZONE OF AMPHIBOLITE SCHIST OF MOTHER LODE
Comment (Deposit): VEINS, AT LEAST 4 PARALLEL VEINS ARE PRESENT IN A 20NE 75 FT WIDE. SOME OF COUNTRY ROCK CONTAIN DISSEMINATED PYRITE. FOOTWALL IS AMPHIBOLITE SCHIST, HANGING WALL BLACK SLATE AND PHYLLITE. VEINS CONTAIN QUARTZ, CALCITE AND AMPHIBOLITE SCHIST. TWO SYSTEMS OF STRINGERS OFF VEIN, ONE PARALLEL TO SCHISTOSITY THE OTHER ALMOST PERPENDICULAR. MINE ON WESTERN MINERALIZED ZONE OF AMPHIBOLITE SCHIST OF MOTHER LODE. VEIN 4 - 12 FT THICK
Comment (Workings): WORKED ON SURFACE TO DEPTH OF 180 FT IN PERIOD TO 1880 MAIN SHAFT IS 350 FT INCLINED SHAFT ON WESTERNMOST VEIN WITH LEVELS AT 70 , 150 , AND 350 FT. OLDER SHAFTS ARE 101 FT ONE TO NORTH AND 164 FT ONE TO SOUTH. SEVERAL CROSSCUTS CONNECT SHAFTS, NUMEROUS DRIFTS AND STOPES
Comment (Commodity): ORE IN 1930S AVERAGED $10 - $14 PER TON
Comment (Location): UTM ACC, SE 1/4 SEC.
Comment (Production): WORKED INTERMITTENTLY 1929 - 1935 , 1850 - 1880 .
References
Reference (Deposit): CLARK, W. B., LYDON, P. A, 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF. COUNTY REPORT 2 ; CALIF. DIV. OF MINES AND GEOLOGY, P 34 - 35 , 65 - 66 , 172 AND PL B
Reference (Deposit): LOGAN, C. A., 1934 , THE MOTHER LODE GOLD BELT OF CALIF: CALIF. DIV. OF MINES BULL. 108 P. 146
Reference (Deposit): LOGAN, C. A., FRANKE, H., 1936 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 32 , NO. 3 ; DIV. OF MINES, P 241 - 2 , 315
Reference (Production): CLARK ( 1962 )
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
