The Sonoma Group is a mercury mine located in Sonoma county, California.
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
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.
Sonoma Group MRDS details
Site Name
Primary: Sonoma Group
Secondary: Crown Point
Secondary: Sonoma Consolidated
Secondary: Old Sonoma
Secondary: New Sonoma
Secondary: Snonoma Group Prospect
Commodity
Primary: Mercury
Location
State: California
County: Sonoma
District: West Mayacmas
Land Status
Not available
Holdings
Not available
Workings
Type: Underground
Ownership
Owner Name: Lee Toland
Percent: 100.0
Info Year: 1946
Owner Name: Peter Pakula
Production
Year: 1946
Material type: 100 flasks between 1873 and 1943.
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Surface-Underground
Discovery Year: 1873
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
Not available
Structure
Type: L
Description: Serpentine - Sandstone Contact
Alterations
Alteration Type: L
Alteration Text: Silica Carbonate Alteration Of Serpentine
Rocks
Name: Serpentinite
Role: Host
Age Type: Host Rock
Age Young: Late Jurassic
Analytical Data
Not available
Materials
Ore: Mercury
Ore: Cinnabar
Comments
Comment (Workings): WORKINGS LARGELY CAVED
Comment (General): Do not confuse this Sonoma with the more significant Sonoma about 18 miles to the SW, also in Sonoma County.
Comment (Location): LOCATED AT CENTER OF SECTION
References
Reference (Deposit): CDMG BASIN PLANNING AREA 1B (197 [copied, but cut off, from deleted record 10214523 (MAS 0060970230).
Reference (Deposit): RANSOME, A.L. AND KELLOGG, J.L., 1939, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG, V. 35, P. 353-486
Reference (Deposit): HONKE, M.T., JR. AND VER PLANCK, W.E., JR., 1950, MINES AND MINERAL RESOURCES OF SONOMA COUNTY, CALIF.: CJMG, V. 46, P. 98-105
Reference (Deposit): BRADLEY, W.W., 1918, QUICKSILVER RESOURCES OF CALIFORNIA: CJMG BULL. 78, 389 P.
Reference (Deposit): HOLMES, G. W., JR., 1965, MERCURY IN CALIFORNIA: IN USBM IC 8252
Reference (Deposit): BAILEY, E. H., 1946, QUICKSILVER DEPOSITS OF THE WESTERN MAYACMAS DISTRICT, SONOMA COUNTY, CALIFORNIA: CALIF. JOUR. OF MINES AND GEOLOGY, V. 42, no. 3, p. 199-230, pl. 29.
Pages: p. 228, pl. 29.
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.
