The Mendocino Mining & Milling Co. Inc. is a gold mine located in Mendocino county, California at an elevation of 801 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: 801 Feet (244 Meters)
Commodity: Gold
Lat, Long: 38.96389, -123.06667
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.
Mendocino Mining & Milling Co. Inc. MRDS details
Site Name
Primary: Mendocino Mining & Milling Co. Inc.
Secondary: Hopland
Commodity
Primary: Gold
Secondary: Platinum
Tertiary: Mercury
Location
State: California
County: Mendocino
District: Red Mountain District
Land Status
Land ownership: Private
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Owner Name: Lloyd C. Ashley
Years: 1924 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Deposit Type: Stream Placer
Operation Type: Unknown
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
Model Name: Placer Au-PGE
Orebody
Form: STREAM SEDIMENT DEPOSITS
Structure
Not available
Alterations
Not available
Rocks
Name: Gravel
Role: Host
Age Type: Host Rock
Age Young: Pliocene
Name: Gravel
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Ore: Cinnabar
Ore: Gold
Comments
Comment (Production): WORKED BY HOWELL IN 1883, WORKED BY LLOYD ASHLEY IN 1924. A PLANT ESTABLISHED IN 1920 FAILED TO RECOVER GOLD AND PLATINUM IN PAYING QUANTITIES AND IT WAS SHUT DOWN AFTER TWO DAYS OPERATION AND WAS DISMANTLED. IN 1924, LLOYD ASHLEY OF ALAMEDA WORKED DEPOSIT ON A SMALL SCALE AND A SMALL PRODUCTION OF PLATINUM WAS REPORTED.
Comment (Deposit): GOLD AND PLATINUM IN A LAYER OF GRAVEL 1.5-3 FT THICK OVERLYING A SANDSTONE GRAVEL. DESCRIPTION MAKES IT SOUND LIKE OLDER GRAVELS FROM ABANDONED CHANNELS OF THE RUSSIAN RIVER
Comment (Geology): THE GRAVEL INCLUDES BOULDERS AND PEBBLES OF SCHISTS, GREENSTONES, QUARTZ, SERPENTINE, AND JASPER DERIVED FROM THE FRANCISCAN FORMATION, SERPENTINE, AND INTRUSIVE ROCKS
Comment (Deposit): SEE ALSO: MRDS M045325.
Comment (Location): LOCATION GIVEN IS FOR DOOLEY CREEK WHERE IT CROSSES THE SECTION LINE. DEPOSIT IS PRIMARILY IN HILLS TO EAST OF CREEK AND SOUTH OF MCDOWELL CREEK
Comment (Commodity): PLATINUM HAS BEEN REPORTED BUT NOT VERIFIED
Comment (Workings): ROCKERS AND SLUICES, SHAFTS
References
Reference (Deposit): O'BRIEN, J.C., 1953, MINES AND MINERAL RESOURCES OF MENDOCINO COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 49, NO. 4, P. 367.
Reference (Deposit): LAIZURE, C.MCK., 1924, MENDOCINO COUNTY: CALIFORNIA STATE MINING BUREAU, 20TH REPORT OF THE STATE MINERALOGIST, P. 87.
Reference (Deposit): LOGAN, C.A., 1919, PLATINUM AND ALLIED METALS IN CALIFORNIA: CALIFORNIA STATE MINING BUREAU BULLETIN 85, P. 44.
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.
