The Black Wonder Extension is a gold mine located in Calaveras county, California at an elevation of 3,150 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: 3,150 Feet (960 Meters)
Commodity: Gold
Lat, Long: 38.35556, -120.42056
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.
Black Wonder Extension MRDS details
Site Name
Primary: Black Wonder Extension
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
Type: L
Description: Associated Diorite Dike With Vein
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Gangue: Quartz
Comments
Comment (Location): UTM EST, SE 1/2 SEC
Comment (Production): ACTIVE PRIOR AND DURING 1930'S NO PRODUCTION RECORD FOUND
Comment (Deposit): VEIN, WHITE TO GREY QTZ VEIN
Comment (Workings): DEVELOPED BY 260 FT N DRIFT ADIT
Comment (Geology): GEOL.DESC: A 3 FT VEIN OF WHITE TO GRAY, ASSOCIATED DIORITE DIKE
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 139 AND PLB
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.
