The La Joya is a mercury mine located in Napa county, California at an elevation of 1,749 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: 1,749 Feet (533 Meters)
Commodity: Mercury
Lat, Long: 38.43944, -122.47111
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.
La Joya MRDS details
Site Name
Primary: La Joya
Commodity
Primary: Mercury
Location
State: California
County: Napa
District: Oakville
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: James Doherty
Production
Year: 1962
Time Period: To 1962
Material type: HG
Description: Cp_Grade: ^5-12 Lb/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1865
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: PODS
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silica Carbonate Alteration Of Serpentine
Rocks
Name: Volcanic Rock (Aphanitic)
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Volcanic Rock (Aphanitic)
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Cinnabar
Ore: Mercury
Gangue: Quartz
Gangue: Pyrite
Gangue: Chalcedony
Comments
Comment (Reserve-Resource): NO VISIBLE RESERVES
Comment (Workings): WORKINGS LARGELY INACCESSIBLE
References
Reference (Deposit): BAILEY, E. H., USGS, PERSONAL FILES
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
Reference (Deposit): 5) BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.
Reference (Production): USBM DATA
Reference (Deposit): FIX, P. F. AND SWINNEY, C. M., 1949, QUICKSILVER DEPOSITS OF THE OAKVILLE DISTRICT, NAPA COUNTY, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 45, P. 31 - 46
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252
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.
