The Mount Diablo Mine is a mercury mine located in Contra Costa county, California at an elevation of 951 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: 951 Feet (290 Meters)
Commodity: Mercury
Lat, Long: 37.90167, -121.87806
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.
Mount Diablo Mine MRDS details
Site Name
Primary: Mount Diablo Mine
Secondary: Ryne
Secondary: Bagley Creek
Commodity
Primary: Mercury
Location
State: California
County: Contra Costa
District: Mount Diablo
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Guadelupe Mining Co.
Owner Name: Nevada Scheelite Co.
Years: 1956 -
Production
Year: 1962
Time Period: To 1962
Material type: HG
Description: Cp_Grade: ^6 Lb/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Year First Production: 1875
Discovery Year: 1863
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: IRREGULAR, TABULAR
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Silica Carbonate Alteration Of Serpentine
Rocks
Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic
Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Metacinnabar
Ore: Cinnabar
Gangue: Quartz
Gangue: Opal
Gangue: Stibnite
Gangue: Calcite
Gangue: Marcasite
Gangue: Chromite
Gangue: Dolomite
Gangue: Pyrite
Gangue: Chalcedony
Comments
Comment (Reserve-Resource): LOW GRADE RESERVES STILL EXIST AT MINE, 17,000 TONS OF INDICATED AND INFERRED RESERVES
Comment (Production): LAST PRODUCED IN 1953
Comment (Development): ECON.COM: LANDSLIDES; VOLATILE GASES
Comment (Geology): RHYOLITE PLUGS NEARBY. BITUMINOUS CLAYS (BLACK ALTA).
Comment (Location): SE/4 SEC. 29.
Comment (Workings): FLOODED
Comment (Deposit): INDIANS USED THE CINNABAR IN TRIBAL CEREMONIES. LATER WAS MINED AS A PLACER ; INFO.SRC : BAILEY E H
References
Reference (Deposit): BAILEY, E. H., USGS, PERSONAL FILES.
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252.
Reference (Deposit): ROSS, C. P., 1940, QUICKSILVER DEPOSITS OF THE MOUNT DIABLO DISTRICT, CONTRA COSTA COUNTY, CALIFORNIA: USGS BULL. 922 - B.
Reference (Deposit): DAVIS, F.F. AND GOLDMAN, H.B., 1958, MINES AND MINERAL RESOURCES OF CONTRA COSTA COUNTY, CALIFORNIA: CJMG V. 54, P. 530-535
Reference (Deposit): 1955 DIREXPL DMEA UNSUCCESSFUL IN DISCOVERING NEW OR
Reference (Production): USBM DATA
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.
