The Blackstone is a gold mine located in Calaveras county, California at an elevation of 2,001 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: 2,001 Feet (610 Meters)
Commodity: Gold
Lat, Long: 38.38806, -120.57333
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.
Blackstone MRDS details
Site Name
Primary: Blackstone
Commodity
Primary: Gold
Secondary: Lead
Secondary: Zinc
Secondary: Copper
Location
State: California
County: Calaveras
District: West Point
Land Status
Not available
Holdings
Not available
Workings
Not available
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: M
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: Several Nearly W. Striking Faults Several W To N Striking Verticle, Fine-Grained Basic To Intermed. Composition Dikes Cut Vein And Country Rock
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Chalcopyrite
Ore: Gold
Ore: Galena
Ore: Pyrite
Ore: Sphalerite
Gangue: Quartz
Comments
Comment (Location): UTM ACC, CENTER W 1/2 SEC
Comment (Production): ORE COMMONLY AVERAGES 1/2 TO 1 OZ OF GOLD PER TON OF ORE BUT HIGH GRADE POCKETS PRESENT. MOST RECENT ORE FROM N. PITCHING ORE SHOOT WITH STOPE LENGTH OF 200 FT IN UPPER LEVELS; 475 FT IN FROM LOWER LEVEL ADIT PORTAL, ANOTHER POCKET WAS 100 FT IN FROM THIS ENTRANCE. TOTAL PRODUCTION ESTIMATED $200000. WAS ACTIVE IN 1957.
Comment (Deposit): VEINS, 6 PARALLEL VEINS WITH BLACKSTONE BEING THE MOST DEVELOPED. VEIN SYSTEM CONTINUES TO N AND SOUTH AND RANGES FROM 1/2 TO 8 FT IN THICKNESS
Comment (Workings): PROPERTY CONSISTS OF 9 CLAIMS. DEVELOPED BY 500 FT LOWER LEVEL ADIT, THREE OTHER BEARING DRIFT ADITS APPROX 100 FT APART ABOVE LOWER LEVEL RANGE FROM 600 - 700 FT IN LENGTH. NEAR CREST OF HILL IS 95 FT SHAFT WITH 160 FT N DRIFT AND 140 FT S. DRIFT. ADIT LEVELS CONNECTED BY RAISES. SHORT ADIT 200 FT DOWN HILL FROM LOWER LEVEL
Comment (Geology): GEOL.DESC: BLACKSTONE VEIN IS MOST DEVELOPED OF 6 PARALLEL VEINS. VEIN SYSTEM CONTINUES TO NORTH AND SOUTH AND RANGES FROM 6 IN TO 8 FT IN THICKNESS. SEVERAL W TO N STRIKING VERTICLE, FINE-GRAINED BASIC TO INTERMED. COMPOSITION DIKES CUT VEIN AND COUNTRY ROCK.
Comment (Commodity): FREE GOLD, ORE ALMOST ALWAYS ASSOCIATED WITH GALENA, FAULTS BOUND ORE SHOOTS, MASSIVE PARTS OF VEIN BARREN. ORE AVERAGES 1/2 - 1 OZ PER TON AU WITH HIGH GRADE POCKETS PRESENT
References
Reference (Production): CLARK ( 1962 )
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 38 - 39 , 42 - 43 , 138 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.
