The Keystone Mine is a gold, copper, silver, and zinc mine located in Shasta county, California at an elevation of 2,789 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: 2,789 Feet (850 Meters)
Commodity: Gold, Copper, Silver, Zinc
Lat, Long: 40.7211, -122.51390
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.
Keystone Mine MRDS details
Site Name
Primary: Keystone Mine
Commodity
Primary: Gold
Primary: Copper
Primary: Silver
Primary: Zinc
Tertiary: Sulfur-Pyrite
Location
State: California
County: Shasta
District: West Shasta 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
Type: Patented
Workings
Not available
Ownership
Owner Name: U. V.(Formerly-U. S. Smelting-Refining And Mining Co. 1923-1925
Percent: 100.0
Home Office: California
Info Year: 1978
Production
Not available
Deposit
Record Type: Site
Operation Category: Past Producer
Operation Type: Underground
Mining Method: Unknown
Year First Production: 1923
Discovery Year: 1900
Years of Production:
Organization:
Significant: N
Deposit Size: M
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: Klamath Mountains
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Unknown: Chalcopyrite
Unknown: Silver
Unknown: Sphalerite
Unknown: Chalcopyrite
Unknown: Pyrite
Unknown: Pyrite
Unknown: Gold
Unknown: Silver
Unknown: Gold
Unknown: Sphalerite
Comments
Comment (Environmental Factors): THE KEYSTONE MINE LIES SOUTHWEST ABOVE THE BALAKLALA MINE. HIGHLY DISCOLORED DRAINAGE LEAVES THE LOWEST PORTAL OF THE MINE AND TRAVELS OVER A TAILINGS DUMP TO AN EXCAVATED AREA WHERE IT IS PONDED TO ALLOW SOME PRECIPITATION OF BASIC IRON COMPOUNDS. ACID MINE DRAINAGE EVENTUALLY DISCHARGES INTO SHASTA LAKE VIA WEST SQUAW CREEK (SOUTH FORK). ABOUT 20 TO 500 GPM OF DRAINAGE, WITH A PHY OF 2.9-3.8 DISCHARGES FROM THE KEYSTONE PORTAL AND JOINS THE DISCHARGE FROM THE BALAKLALA WINDY CAMP PORTALS. THIS DRAINAGE CONTRIBUTES UP TO ABOUT 12 PERCENT OF THE HEAVY METALS IN WEST SQUAW CREEK.
Comment (Geology): OTHER ON COLUMN 46-52 IS MASSIVE SULPHIDE
Comment (Deposit): SEE SEQUENCE NO. 0060890475 FOR BENEFICIATION AND UNDERGROUND MINING METHODS EMPLOYED.
References
Reference (Deposit): ERIC,J.H.,1948,TABULATION OF COPPER DEPOSITS OF CALIF.,PART
Reference (Deposit): 3 IN COPPER IN CALIF. CALIF DIV OF MINES BULL. 144 P197-387
Reference (Deposit): KINKLE,A.R.,HALL,W.E.,ALBERS,J.P.,1956,GEOLOGY AND BASE
Reference (Deposit): METAL&DEPOSITS OF WEST SHASTA COPPER ZINC DISTRICT. SHASTA
Reference (Deposit): COUNTY,CALIF. U.S.G.S. PROF. PAPER 285. 156P.
Reference (Deposit): MOORE,L. 1970, COPPER RESOURCES AND PRODUCTION OF WEST
Reference (Deposit): SHASTA MINING DISTRICT, U.S.B.M. REPORT 85.
Reference (Deposit): HILLMAN,C.T., SCHUMACHER,O. AND GOSLING,B, 1977, THE WEST
Reference (Deposit): SHASTA DISTRICT,SHASTA COUNTY,CALIF. U.S.B.M. MAS REPORT.40P
Reference (Deposit): CLAWSON,R.F.,1969, SQUAW CREEK COPPER INVENTORY: CALIFORNIA
Reference (Deposit): DEPT.OF WATER RESOURCES MEMOIR REPT. 29P.
Reference (Deposit): UNIVERSITY OF CALIFORNIA, BERKELEY. MINING WASTE STUDY,
Reference (Deposit): FINAL REPORT, JULY 1988, 416 PP. (P. 215-219).
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.
