The Crosby Prospects is a mine located in Alameda county, California at an elevation of 1,001 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: 1,001 Feet (305 Meters)
Commodity:
Lat, Long: 37.55167, -121.69056
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.
Crosby Prospects MRDS details
Site Name
Primary: Crosby Prospects
Commodity
Tertiary: Manganese
Location
State: California
County: Alameda
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Mary Gerow
Years: 1950 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
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
Name: Chert
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Not available
Comments
Comment (Geology): GEOL.DESC: AT THE NORTHERN AND BETTER OF THE TWO PROSPECTS A LARGE BLOCK CONTAINING ABOUT 50 TONS OF SILICEOUS ORE IS EXPOSED ON THE SURFACE. IT IS UNDERLAIN BY WELL BEDDED CHERTS AND SHALES, STRIKING N 60 E, DIP 30 S. THE OTHER PROSPECT IS 500 FT. SOUTHWEST WHERE A TRENCH EXPOSES A 3 FT. BED OF MASSIVE CHERT CUT BY A FEW VEINLETS OF MANGANESE OXIDE.
Comment (Location): LOCATED IN SE 1/4 SW 1/4 SECTION 30
Comment (Production): NO PRODUCTION
Comment (Workings): TRENCHING
References
Reference (Deposit): BULL. 152, P.19
Reference (Deposit): BULL. 140 , PL. 1 (GEOLOGY)
Reference (Deposit): CALIF. JOUR. MINES & GEOL. V. 46, NO.2, APRIL 1950, P 343, PL. 58
Reference (Deposit): DOM BULL. 125, P.98
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.
