The Black Bart Mine Group is a chromium mine located in Stanislaus 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: Chromium
Lat, Long: 37.41444, -121.43917
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 Bart Mine Group MRDS details
Site Name
Primary: Black Bart Mine Group
Commodity
Primary: Chromium
Location
State: California
County: Stanislaus
District: Del Puerto Area
Land Status
Land ownership: Private
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
Not available
Ownership
Owner Name: Gary J. Barber, 2133 First St., Livermore, Ca. 94550; (415) 497-6666 (Surface Rights)
Production
Year: 1957
Material type: CON
Description: Ap_Grade: ^Avg. 47.1% Cr2o3
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1917
Discovery Method: 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
Physiographic Detail: Diablo Range
Mineral Deposit Model
Not available
Orebody
Form: POD, IRREGULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Serpentinzation Of Dunite
Rocks
Name: Dunite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Jurassic
Analytical Data
Analytical Data: CONCENTRATES AVERAGED 47.1% CR2O3, 14.2% FE, CR/FE 2.3.
Materials
Ore: Chromite
Comments
Comment (Location): MINE WORKINGS ON NORTH SIDE OF HIDEOUT CANYON ABOUT 150 FT ABOVE CANYON FLOOR.
Comment (Development): MINERAL RIGHTS RESERVED BY ESTATE OF MR. ALPHANOO, PREVIOUS OWNER WHO DIED WITHOUT HEIRS.
Comment (Deposit): ORE OCCURS IN A STEEPLY DIPPING TABULAR BODY.
Comment (Workings): WORKING CONSISTED (1953) OF AN OPEN PIT, 5 SHORT ADITS AND SOME UNDERGROUND STOPING.
Comment (Geology): CHROMITE DEPOSITS OCCUR IN AN ULTRAMAFIC BODY THAT TRENDS N70W, IS 8 MILES LONG AND 1.5 MILES WIDE. THE ULTRAMAFIC BODY IS INTRUSIVE INTO THE UPPER PART OF EXPOSED FRANCISCAN SECTION.
References
Reference (Deposit): STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED.
Reference (Production): CDMG BULL 134, PT. 2, CHAPT. 2, P. 74, 75
Reference (Deposit): WALKER, G.W. AND GRIGGS A.B., 1953, GEOL. INVESTIGATIONS OF CHROMITE IN CALIF.: CDMG BULL 134, PART II, CHAPT. 2, P. 74 75.
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.
