California · Napa County
Past Producer

La Joya

Napa County, California, United States
Mercury
⌖ Show on mapUSGS source ↗
Commodities
PrimaryMercury
Commodity typeM
Deposit
Deposit sizeS
WorkingsUnderground
Orebody formPODS
Ore controlChanges In Fault Attitudes, Brecciation Of Silica - Carbonate Rock
Materials
Ore mineralsCinnabar, Mercury
GangueChalcedony, Pyrite, Quartz
Geology
Host rockSerpentinite
Associated rockVolcanic Rock (Aphanitic)
AlterationSilica Carbonate Alteration Of Serpentine
Economic & production
Development statusPast Producer
Production years1873, 1915 - 1918, 1929 - 1934, 1936 - 1939, 1942
Discovery year1865
Identification
Deposit ID10040858
MRDS IDM055733
RegionNA
Data scoreB
Coordinates38.43933, -122.47217
References
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 - 46HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252BAILEY, E. H., USGS, PERSONAL FILESRANSOME, A. L. AND KELLOGG, J. L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 35, P. 353 - 4865) BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.USBM DATA