The Bence Mine is a gold mine located in Calaveras county, California at an elevation of 1,801 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: 1,801 Feet (549 Meters)
Commodity: Gold
Lat, Long: 38.15861, -120.52722
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.
Bence Mine MRDS details
Site Name
Primary: Bence Mine
Secondary: Esmeralda Ext.
Secondary: Tellurium
Commodity
Primary: Gold
Location
State: California
County: Calaveras
Land Status
Not available
Holdings
Not available
Workings
Type: 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
Comments
Comment (Commodity): CONTAINS FREE GOLD AND ABUNDANT SULFIDES WITH SOME TELLURIDES RECOVERED IN EARLY OPERATIONS
Comment (Location): UTM ACC. SE 1/4 OF NE 1/4 SEC
Comment (Production): PROBABLY WORKED IN 1870'S AND 1880'S BUT NO RECORD REMAINS INTERMITTENTANTLY ACTIVE 1932 - 38 . OUT PUT AMOUNT ESTIMATED AT SEVERAL THOUSAND DOLLARS. FREE MILLING ORE. ORE MINED IN 30'S REPORTED TO AVERAGE $10 PER TON FREE GOLD. SOME ORE MILLED 1934 .
Comment (Deposit): VEIN
Comment (Workings): MINE DEVELOPED BY 400 AND 175 FT SHAFTS, 150 FT N. CROSSCUT ADIT TO VEIN WITH 400 FT WESTWARD DRIFT OFF ADIT. VEIN STOPED TO SURFACE ADJACENT TO SHAFTS.
Comment (Geology): COUNTRY ROCK IS GRAPHITIC SLATE AND QUARTZ-MICA SCHIST, GREEN SCHIST LIES JUST TO SOUTH. ; GEOL.DESC: COUNTRY ROCK IS GRAPHITIC SLATE AND QUARTZ-MICA SCHIST, GREEN SCHIST LIES JUST TO SOUTH. MINE ON EAST END OF MAJOR VEIN SYSTEM WHICH INCLUDES, BONEHARD, J & K, AND ESMERALDA MINES. VEIN RANGES FROM 2 TO 6 FT WIDE AND DIPS FROM 60 TO 75 N. ANOTHER 10 FT VEIN ON SURFACE HAS NOT BEEN DEVELOPED
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 36 , 41 , 137 , AND PLB
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. 242 , 297
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.
