The Black Diamond Mine is a chromium mine located in Glenn 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 Diamond Mine MRDS details
Site Name
Primary: Black Diamond Mine
Secondary: Grey Eagle Camp
Commodity
Primary: Chromium
Location
State: California
County: Glenn
Land Status
Land ownership: National Forest
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Surface
Ownership
Not available
Production
Year: 1954
Material type: ORE
Description: Ap_Grade: ^46.7% Cr2o3
Year: 1918
Time Period: 1916 - 1918
Material type: CHROMITE
Description: Cp_Grade: ^30-50% Cr2o3
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: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR TO LINEAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Serpentinization Of Dunite
Rocks
Not available
Analytical Data
Analytical Data: 1955: CR-FE-2.8
Analytical Data: ANNUAL PRODUCTION FOR 1934: CR-FE-3.1
Materials
Ore: Chromite
Comments
Comment (Deposit): APPARENT NORMAL FAULTING IN PIT HAS DISPLACED MAIN ORE BODY UNKNOWN DISTANCE DOWN FAULT PLANE
Comment (Geology): LINEAR, NORTH TRENDING PERIDOTITE BODY INTRUDED BY NUMEROUS MAFIC DIKES OF DIORITIC COMPOSITION.
References
Reference (Deposit): STINSON, M.C., 1975, MINERAL PROPERTY REPORT: CDMG UNPUBLISHED REPORT
Reference (Production): STINSON, 1975, MINERAL PROPERTY REPORT: CDMG
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.
