The Helen is a mercury mine located in Lake county, California at an elevation of 2,700 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: 2,700 Feet (823 Meters)
Commodity: Mercury
Lat, Long: 38.74111, -122.70000
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.
Helen MRDS details
Site Name
Primary: Helen
Secondary: American
Secondary: Dead Broke
Commodity
Primary: Mercury
Location
State: California
County: Lake
District: East Mayacmas
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: H. W. Gould Co.
Production
Year: 1962
Time Period: To 1962
Material type: HG
Description: Cp_Grade: ^12 Lb/Ton
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Unknown
Discovery Year: 1871
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: Serpentine - Sandstone Contact
Alterations
Alteration Type: L
Alteration Text: Silica Carbonate Alteration Of Serpentine, Kaolinization Of Basalt.
Rocks
Name: Basalt
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Basalt
Role: Associated
Age Type: Host Rock
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Cinnabar
Ore: Mercury
Ore: Metacinnabar
Gangue: Pyrite
Gangue: Opal
Comments
Comment (Production): TOTAL PRODUCTION MAY BE AS MUCH AS 16,000 FL
Comment (Workings): OLDER WORKINGS ARE CAVED
References
Reference (Deposit): YATES, R. G. AND HILPERT, L. S., 1946, QUICKSILVER DEPOSITS OF THE EASTERN MAYACMAS DISTRICT, LAKE AND NAPA COUNTIES, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42, P. 231 - 286
Reference (Deposit): AVERILL, C.V., 1947, MINES AND MINERAL RESOURCES OF LAKE COUNTY, CALIF.: CJMG, V. 43, P. 15-38
Reference (Deposit): 5) BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.
Reference (Deposit): 6) RANSOME, A.L. AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, V. 35, P. 353-558
Reference (Deposit): 1955 DIREXPL EATON AND SMITH CONTRACTOR
Reference (Production): USBM DATA
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252
Reference (Deposit): BAILEY, E. H., USGS, PERSONAL FILES
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.
