The Black Point is a mine located in Contra Costa county, California.
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
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 Point MRDS details
Site Name
Primary: Black Point
Commodity
Tertiary: Copper
Tertiary: Mercury
Location
State: California
County: Contra Costa
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Comment (Location): NW 1/4 , NE 1/4 UTM EST
Comment (Commodity): TRACE OF HG IN ORE SPECIMEN
Comment (Production): PRODUCTION OF CU FROM THE (MOUNT ZION?) MINE IN 1902 AND 1918 LESS THAN 40,000 POUNDS.
Comment (Deposit): NETWORK OF COPPER VEINLETS
Comment (Workings): ADIT, BEARING N 80 W, OVER 50 FT. LONG WITH A WINZE DIPPING N., 30 FT. FROM PORTAL
Comment (Geology): GEOL.DESC: CHRYSOCOLLA AND COPPER OXIDES IN A NETWORK OF CARBONATE VEINLETS IN DIABASE. MINERALIZED SHEAR ZONE EXPLORED BY ADIT BEARING N. 80 DEG. W. FOR MORE THAN 50' AND A WINZE, DIPPING N., 30' FEET FROM THE PORTAL.
References
Reference (Deposit): PAMPEYAN, E.H., 1963 , GEOLOGY AND MINERAL DEPOSITS OF MOUNT DIABLO, CONTRA COSTA COUNTY; CALIFORNIA DIVISION OF MINES AND GEOLOGY, SPECIAL REPORT 80 , P. 21
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.
