The St. Johns Mine is a mercury mine located in Solano county, California at an elevation of 1,112 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: 1,112 Feet (339 Meters)
Commodity: Mercury
Lat, Long: 38.15194, -122.19167
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.
St. Johns Mine MRDS details
Site Name
Primary: St. Johns Mine
Secondary: St. Johns Quicksilver Mine
Secondary: Vallejo
Secondary: St. John Mine.
Commodity
Primary: Mercury
Location
State: California
County: Solano
District: Sulfur Springs Mountain (Vallejo)
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Mrs. C. Dennis
Years: 1939 -
Owner Name: J. C. Lawley
Years: 1939 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1873
Discovery Year: 1852
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
Not available
Orebody
Form: TABULAR
Structure
Type: R
Description: Prominent N-S Fracture System In The Sandstone
Type: L
Description: Thrust Fault
Alterations
Alteration Type: L
Alteration Text: Silica - Carbonate From Serpentine And Andesite
Rocks
Name: Serpentinite
Role: Host
Age Type: Host Rock
Age in Years: 170.500000+-7.500000
Age Young: Jurassic
Analytical Data
Analytical Data: ASSAYS 2-3 LB/TON OR LESS
Materials
Ore: Cinnabar
Gangue: Quartz
Comments
Comment (Geology): JUR(?) SEDIMENTS AND JUR(?) SERPENTINE IN BRECCIA BENEATH A THRUST FAULT. BOTH ROCKS INTRUDED BY ANDESITE DIKES. DUMPS OF OLD TUNNELS SHOW SCHISTS
Comment (Location): NORTHERN END OF SULFUR SPRINGS MOUNTAIN RIDGE
Comment (Production): 130-150 LB/FT OF WORKINGS
Comment (Development): LAST PRODUCTION - 1923
Comment (Workings): INACCESSIBLE (1965)
References
Reference (Deposit): BAILEY, E. H., USGS, PERSONAL FILES
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252.
Reference (Production): USBM DATA
Reference (Deposit): BRADLEY, W. W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CDMG BULL. 78.
Reference (Deposit): AUBURY, L. E., 1903, THE QUICKSILVER RESOURCES OF CALIFORNIA: CDMG BULL. 27.
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.
