Belmont - Osborne Mine

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

Name: Belmont - Osborne Mine  

State:  California

County:  Calaveras

Elevation: 1,401 Feet (427 Meters)

Commodity: Gold

Lat, Long: 38.07722, -120.57972

Map: View on Google Maps

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.


Satelite image of the Belmont - Osborne Mine

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

"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.