The Moore Creek Manganese Ridge Prospect is a manganese mine located in Napa county, California at an elevation of 1,201 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: 1,201 Feet (366 Meters)
Commodity: Manganese
Lat, Long: 38.53972, -122.39306
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.
Moore Creek Manganese Ridge Prospect MRDS details
Site Name
Primary: Moore Creek Manganese Ridge Prospect
Commodity
Primary: Manganese
Location
State: California
County: Napa
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: C. E. Wolcott
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: M
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
Name: Shale
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Name: Shale
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Not available
Comments
Comment (Production): PRODUCTION 150 TO 999 TONS. PROPERTY HAS PRODUCED ABOUT 300 TONS OF ORE; AVERAGE GRADE WAS 44% MANGANESE AND 19% SILICA.
Comment (Workings): OPEN CUT, TUNNEL.
Comment (Geology): ORE HOSTED IN FRANCISCAN COMPLEX--L. TO L. ; GEOL.DESC: LENSES IN THIN BEDDED RED RADIOLARIAN CHERT AND SHALE. ORE IS IN CLOSE ASSOCIATION WITH THICK BEDS OF MASSIVE RED JASPER LENSES IN THIN BEDDED CHERT. ORE VARIES FROM MANGANIFEROUS CHERT TO MANGANESE OXIDE WITH SMALL AMOUNT OF SILICA. MAIN ORE FOUND DEEP IN WORKINGS IS A RED - BROWN GRANULAR MATERIAL, WHICH OXIDIZES ON EXPOSURE.
References
Reference (Deposit): CALIF. BULL. 125, 1943, P. 146
Reference (Deposit): CALIF. BULL. 76, 1918, P. 51
Reference (Deposit): REPT. 25, 1929, P. 219; ADD. REF.: BULL. 152, 1950, PP. 158-9
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.
