Mine detail: Keystone Mine

Previously called ''

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Location

Lat / long: 40.72095, -122.515

Resource(M)

Primary: Gold, Silver, Zinc, Copper
Tertiary: Sulfur-Pyrite
Other material: Chalcopyrite, Gold, Pyrite, Silver, Sphalerite
Discovery year: 1900

Production

Operation type: Underground
Development status: Past Producer
First production started: 1923

Geology

References

MRDSW025291
MAS60890362
DEP10214011
Reference{Deposit:: UNIVERSITY OF CALIFORNIA, BERKELEY. MINING WASTE STUDY,}{Deposit:: FINAL REPORT, JULY 1988, 416 PP. (P. 215-219).}{Deposit:: CLAWSON,R.F.,1969, SQUAW CREEK COPPER INVENTORY: CALIFORNIA}{Deposit:: DEPT.OF WATER RESOURCES MEMOIR REPT. 29P.}{Deposit:: ERIC,J.H.,1948,TABULATION OF COPPER DEPOSITS OF CALIF.,PART}{Deposit:: 3 IN COPPER IN CALIF. CALIF DIV OF MINES BULL. 144 P197-387}{Deposit:: KINKLE,A.R.,HALL,W.E.,ALBERS,J.P.,1956,GEOLOGY AND BASE}{Deposit:: METAL&DEPOSITS OF WEST SHASTA COPPER ZINC DISTRICT. SHASTA}{Deposit:: COUNTY,CALIF. U.S.G.S. PROF. PAPER 285. 156P.}{Deposit:: MOORE,L. 1970, COPPER RESOURCES AND PRODUCTION OF WEST}{Deposit:: SHASTA MINING DISTRICT, U.S.B.M. REPORT 85.}{Deposit:: HILLMAN,C.T., SCHUMACHER,O. AND GOSLING,B, 1977, THE WEST}{Deposit:: SHASTA DISTRICT,SHASTA COUNTY,CALIF. U.S.B.M. MAS REPORT.40P}
ReporterHillman