The Marine Magnesium Co. Seawater Plant is a magnesite mine located in San Mateo county, California at an elevation of 33 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: 33 Feet (10 Meters)
Commodity: Magnesite
Lat, Long: 37.6514, -122.37830
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.
Marine Magnesium Co. Seawater Plant MRDS details
Site Name
Primary: Marine Magnesium Co. Seawater Plant
Secondary: Merck & Co. Plant
Commodity
Primary: Magnesite
Location
State: California
County: San Mateo
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Marine Magnesium Co.
Home Office: California
Info Year: 1989
Owner Name: Genentech, Inc.
Home Office: California
Info Year: 1989
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Brine Operation
Mining Method: Unknown
Milling Method: Crystallization
Years of Production:
Organization:
Significant: Y
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
Not available
Comments
Comment (Geology): PRODUCES CAUSTIC CALCINE FROM SEA WATER.
Comment (Ownership): THE ORIGINAL OPERATOR OF THE 15,000 TPA SPECIALITY MAGNESIA PLANT WAS MERCK & CO., WHICH SOLD THE PLANT TO GENENTECH, INC., IN 1987. MARINE MAGNESIUM CO. LEASES THE PLANT GENENTECH, INC.
References
Reference (Deposit): INDUSTRIAL MINERALS, SEPT. 1989, P. 51.
Reference (Deposit): MINING ENGINEERING, JUNE 1989, P. 412.
Reference (Deposit): MINING ENGINEERING, JUNE, 1990, P. 569.
Reference (Deposit): INDUSTRIAL MINERALS, AUG. 1983, P. 74, 85.
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.
