The Oat Hill Mine is a mercury mine located in Napa county, California at an elevation of 1,841 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: 1,841 Feet (561 Meters)
Commodity: Mercury
Lat, Long: 38.67852, -122.51859
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.
Oat Hill Mine MRDS details
Site Name
Primary: Oat Hill Mine
Secondary: Oat Hill
Secondary: Napa Consolidated
Commodity
Primary: Mercury
Location
State: California
County: Napa
District: East Mayacmas
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Norman B. Livermore And Sons
Owner Name: Kritikos, William
Years: 1970 -
Production
Year: 1960
Time Period: To 1960
Material type: HG
Description: Cp_Grade: ^10-15 Lb/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1876
Discovery Year: 1872
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: Y
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
Not available
Structure
Type: R
Description: Mayacmas Anticline Trending Nw
Type: L
Description: Local Fractures , Brecciation Of Sediments
Alterations
Alteration Type: L
Alteration Text: Kaolinization Of Sediments
Rocks
Name: Basalt
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic
Name: Basalt
Role: Associated
Age Type: Associated Rock
Age Young: Holocene
Name: Basalt
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Cinnabar
Gangue: Quartz
Gangue: Calcite
Gangue: Pyrite
Comments
Comment (Geology): FAR REMOVED FROM SERPENTINE, AN UNUSUAL OCCURRENCE. BASALT FLOW PRESENT.
Comment (Production): HIGH GRADE ORE EXHAUSTED AROUND 1903. USBM DATA.
Comment (Workings): 3RD LARGEST MERCURY MINE IN THE US. WORKINGS LARGELY INACCESSIBLE
Comment (General): Note the distinction between this record for Oat Hill Mine and the other record, 10261509 (MAS 00608550127), which is the plant record.
Comment (Exploration): 1943 DIREXPL WITH USBM - SIGNIFICANT TONNAGE OF LOW GRADE OR
References
Reference (Deposit): RANSOME, A.L. AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, V. 35, P. 353-486
Reference (Deposit): YATES, R. G. AND HILPERT, L. S., 1949, QUICKSILVER DEPOSITS OF THE EASTERN MAYACMAS DISTRICT, LAKE AND NAPA COUNTIES, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42, no. 3, p. 231-286, pl. 29.
Pages: p. 260-265.
Reference (Deposit): BAILEY, E. H., USGS, PERSONAL FILES
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252
Reference (Deposit): JOHNSON, F.T. AND RICKER, S., 1949, INVESTIGATION OF THE OAT HILL MERCURY MINE, NAPA COUNTY, CALIF.: USBM RI 4542
Reference (Deposit): DAVIS, F.F., 1948, MINES AND MINERAL RESOURCES OF NAPA COUNTY, CALIF.: CJMG, V. 44, P. 176-183
Reference (Deposit): BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.
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.
