The Mendenhall No. 1 Mine is a chromium mine located in Alameda county, California at an elevation of 3,481 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: 3,481 Feet (1,061 Meters)
Commodity: Chromium
Lat, Long: 37.5575, -121.61194
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.
Mendenhall No. 1 Mine MRDS details
Site Name
Primary: Mendenhall No. 1 Mine
Secondary: Claim: Cedar Mtn.
Commodity
Primary: Chromium
Location
State: California
County: Alameda
District: Cedar Mountain 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
Type: Surface
Ownership
Owner Name: Palo Alto Mining Corp., Campbell, Ca.
Years: 1956 -
Owner Name: Vernon And Dorthy Rose, 1230 Marguerite St., Livermore, Ca. 94550 (415) 447-3431
Years: 1975 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1888
Year Last Production: 1956
Discovery Year: 1885
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: IRREGULAR
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Analytical Data: CR/FE 2.5-3.0
Analytical Data: 11.7-13.8% FE
Analytical Data: CONCENTRATES: 43.3-51.3% CR2O3
Materials
Ore: Chromite
Comments
Comment (Commodity): CONCENTRATES SHIPPED 1953-1956.
Comment (Location): WORKINGS NEAR TOP OF KNOLL ON AN E-W TRENDING RIDGE LESS THAN 1/2 MILE FROM CEDAR MOUNTAIN.
Comment (Deposit): ORE OCCURS IN IRREGULAR LENTICULAR POCKETS AND STRINGERS.
Comment (Workings): WORKINGS CONSISTED OF SEVERAL LARGE OPEN CUTS AND TRENCHES.
Comment (Geology): A NEARLY CIRCULAR MASS OF SERPENTINIZED ULTRAMAFIC ROCKS, ABOUT A MILE IN DIAMETER, OCCUR ON CEDAR MOUNTAIN.
Comment (Deposit): Discovery Year: 1880'S
References
Reference (Deposit): STINSON, M.C., 1975, CALIF. DIVISION OF MINES AND GEOLOGY MINERAL PROPERTY REPORT, UNPUBLISHED.
Reference (Production): CDMG MINERAL PROPERTY REPORT, UNPUBLISHED
Reference (Deposit): WALKER, G.W. AND GRIGGS, A.B., 1953, GEOL. INVESTIGATIONS OF CHROMITE IN CALIF.: CDMG BULL. 134, PART II, CHAPT. 2, P. 52.
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.
