Keystone Mine

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

Name: Keystone Mine  

State:  California

County:  Shasta

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.


Satelite image of the Keystone Mine

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

"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.