The Cedar Mountain is a magnesite mine located in Alameda 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.
Cedar Mountain MRDS details
Site Name
Primary: Cedar Mountain
Commodity
Primary: Magnesite
Location
State: California
County: Alameda
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Hugh Walker
Years: 1950 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
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
Not available
Analytical Data
Not available
Materials
Ore: Magnesite
Comments
Comment (Workings): GLORY HOLE AND CUT; TUNNELS; LARGEST PIT 30 FT. ACROSS AND 30 FT. DEEP
Comment (Deposit): ADD. REF. NO.4. DOM BULL. 176, 1957, P.314, 315
Comment (Production): WORKED SPASMODICALLY FOR SEVERAL YEARS; NO PRODUCTION REPORTED SINCE 1917. IN 1925 THERE WAS ABOUT A CARLOAD OF ORE ON HAND READY TO SHIP. THE MAGNESITE, AS A RULE, WAS OF EXCELLENT QUALITY. HOLDINGS IN 1925 WERE 160 ACRES. THE ROCK IS WHITE, PORCELLANEOUS, MASSIVE TO MAMMILLARY; FRACTURE IS CONCHOIDAL. IT OCCURS NEAR THE OUTER MARGIN OF A SERPENTINE BODY ON CEDAR MOUNTAIN
References
Reference (Deposit): DOM BULL. 79, P.140
Reference (Deposit): BULL. 140, P.62, PL.1
Reference (Deposit): CALIF. JOUR. MINES & GEOL. V. 46, NO.2, APRIL 1950, P.299, 340, PL. 58
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.
