The West Mayacmas District Report is a chromium and mercury mine located in Sonoma 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.
West Mayacmas District Report MRDS details
Site Name
Primary: West Mayacmas District Report
Commodity
Primary: Chromium
Primary: Mercury
Location
State: California
County: Sonoma
District: WEST MAYACMAS DISTRICT
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
Production
Not available
Deposit
Record Type: District
Operation Category: Producer
Deposit Type: STOCKWORK, VEINS, DISSEMINATED, INCRUSTATIONS
Operation Type: Unknown
Year First Production: 1861
Discovery Year: 1850
Years of Production:
Organization:
Significant:
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Type: R
Description: NW STRIKE OF FRANCISCAN ROCKS AND DIP STEEPLY NE, NW TRENDING FAULT ZONES
Type: L
Description: THE MAJOR SHEAR ZONES, CHANGES IN ATTITUDE OF A FAULT OR SPLITS IN A FAULT
Alterations
Alteration Type: L
Alteration: SILICA CARBONATE
Alteration Text: SILICA CARBONATE ALTERATION OF SERPENTINE, INDURATION OF SEDIMENTS
Rocks
Not available
Analytical Data
Not available
Materials
Not available
Comments
Not available
References
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252
Reference (Deposit): HONKE, M. J., JR., AND VER PLANCK, W. E., JR., 1950, MINES AND MINERAL RESOURCES OF SONOMA COUNTY, CALIFORNIA; CALIF. JOUR. OF MINES AND GEOLOGY, V. 46, P. 98 - 105
Reference (Deposit): RANSOME, A. L. AND KELLOGG, J. L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 35, P. 353 - 486
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.
