The Alto Mine is a gold mine located in Calaveras county, California at an elevation of 600 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: 600 Feet (183 Meters)
Commodity: Gold
Lat, Long: 37.895, -120.60611
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.
Alto Mine MRDS details
Site Name
Primary: Alto Mine
Secondary: Alta Mine
Commodity
Primary: Gold
Location
State: California
County: Calaveras
Land Status
Not available
Holdings
Not available
Workings
Type: Surface/Underground
Ownership
Not available
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Gold
Gangue: Quartz
Comments
Comment (Workings): MAIN GLORY HOLE ON WEST VEIN WITH SMALL ONE ON EAST VEIN. LEVELS IN MINE ARE AT 100 , 200 , 300 AND 400 FT. WITH 100 FT. LEVEL HAVING CROSSCUT TO GLORY HOLE. CONSIDERABLE STOPING DONE ON EAST VEIN
Comment (Deposit): VEIN
Comment (Geology): GEOL.DESC: TWO PRINCIPAL VEINS, SEVERAL HUNDRED FEET APART BUT CONVERGE TO THE NORTH. THE WEST VEIN IS A DIKE-LIKE BODY OF MINERALIZED GREENSTONE WHICH IS MASSIVE, FINE GRAINED, DARK AND IMPREGNATED WITH FINE-GRAINED PYRITE. RELATIVELY SMALL AMOUNT OF QUARTZ AND COMB STRUCTURES ARE COMMON.
Comment (Production): VALUE OF TOTAL PRODUCTION ESTIMATED AT 1 MILLION DOLLARS AT OLD PRICE. GLORY HOLE MINING 1902 - 1907 . QUARTZ ORE UP TO $10/TON WITH SULFIDE CONCENTRATES $35 TO $40 PER TON OF AU. SOME HIGH GRADE ORE FOUND. 40 STAMP MILL, NO. 3 GATES GYRATORY CRUSHER, 8 CONCENTRATING TABLES. DURING THE PERIOD FROM 1902 TO 1907 THE ORE FROM THE QUARTZ VEINS AVERAGED $1.20 PER TON.
References
Reference (Deposit): CLARK, W.B., LYDON, P.A., 1962 , MINES AND MINERAL RESOURCES OF CALAVERAS COUNTY, CALIF.; COUNTY REPORT 2 ; CALIF. DIV. OF MINES AND GEOLOGY, P. 37 - 40 , 135 AND PL 3
Reference (Deposit): TUCKER, W.B., 1915 , CALAVERAS COUNTY; 14 TH REPT. STATE MIN.; CALIF. MIN. BUR., P. 68
Reference (Production): CLARK ( 1962 ), TUCKER ( 1915 )
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.
