The Bernal is a mercury mine located in Santa Clara county, California at an elevation of 600 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: 600 Feet (183 Meters)
Commodity: Mercury
Lat, Long: 37.22, -121.79222
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.
Bernal MRDS details
Site Name
Primary: Bernal
Commodity
Primary: Mercury
Location
State: California
County: Santa Clara
District: New Almaden
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Pedro A Bernal
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1918
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
Mineral Deposit Model
Not available
Orebody
Form: IRREGULAR
Structure
Type: L
Description: Local Fracturing, Clay - Serpentine Contact
Alterations
Alteration Type: L
Alteration Text: Silica Carbonate Alteration Of Serpentine
Rocks
Name: Serpentinite
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Cinnabar
Gangue: Quartz
Gangue: Dolomite
Comments
Comment (Production): ORE RAN 3 LB/TON
Comment (Workings): INACTIVE SINCE 1918
Comment (Location): LOCATION UNCERTAIN N SLOPE SANTA TERESA HILLS
Comment (Reserve-Resource): NO VISIBLE RESERVES
References
Reference (Deposit): BAILEY, E. H. AND EVERHART, D. L., 1964, GEOLOGY AND QUICKSILVER DEPOSITS OF THE NEW ALMADEN DISTRICT, SANTA CLARA COUNTY, CALIFORNIA: USGS PROF. PAPER 360, 206 P.
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252
Reference (Deposit): BAILEY, E. H., USGS, PERSONAL FILES
Reference (Deposit): BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, BULL. 78, 389 P.
Reference (Deposit): 5) DAVIS, F.F. AND JENNING, C.W., 1954, MINES AND MINERAL RESOURCES OF SANTA CLARA COUNTY, CALIF.: CJMG, V. 50, P. 342-354
Reference (Deposit): 6) FRANKE. H.A., 1930, SANTA CLARA COUNTY, MINING IN CALIFORNIA: REPT. OF THE STATE MINERALOGIST, V. 26, P. 26-33
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.
