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Keystone Mine

Past Producer in Shasta county in California, United States with commodities Copper, Gold, Sulfur-Pyrite, Silver, Zinc
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Sections on this page
  1. Identification information
  2. Geographic coordinates
  3. Site location context
  4. Geographic areas
  5. Public Land Survey System information
  6. Commodities
  7. Materials information
  8. Nearby scientific data
  9. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Mineral rights holdings
  13. Land status
  14. Ownership information
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10214011
MRDS ID W025291
MAS/MILS ID 0060890362
Record type Site
Current site name Keystone Mine
Related records 10077589

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -122.515, 40.72095 (WGS84)
Elevation 850
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Shasta(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Whiskeytown(quadrangle 1:24,000 scale)

Redding(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Sacramento Headwaters(hydrologic unit)

Upper Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Shasta-Trinity National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Shasta

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 033 N 006 W 14 NE California

Commodities

Commodity Importance
Copper Primary
Gold Primary
Sulfur-Pyrite Tertiary
Silver Primary
Zinc Critical Primary

Materials information

Materials Type of material
Chalcopyrite Unknown
Gold Unknown
Pyrite Unknown
Silver Unknown
Sphalerite Unknown
Chalcopyrite Unknown
Gold Unknown
Pyrite Unknown
Silver Unknown
Sphalerite Unknown

Nearby scientific data

Main Entrance (1) -122.515, 40.72095
ListMap

Economic information

Ore body information

  • Field Value
    MAS Matrix # 1
    MAS Column # 1
    Type of Orebody #1 SHEAR ZONE
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 FISSURE VEIN
    Type of Orebody #3 OTHER
    Primary mode of Origin HYDROTHERMAL
    Secondary mode of Origin CONT METASOMATIC
    Primary Ore Control FOLDING
    Secondary Ore Control FRACTURING
    Degree of Wallrock Alter. MODERATE
    Type of Wallrock Alter. #1 PYRITIZATION
    Type of Wallrock Alter. #2 INTERM ARGILLIC
    Type of Wallrock Alter. #3 SERICITIC
    Date of Last Modification 830316
  • Area 15HA
    Field Value
    Total Surface Area (HA) 15
    Date of Last Modification 910418

Comments on the geologic information

  • OTHER ON COLUMN 46-52 IS MASSIVE SULPHIDE

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1900
Year of first production 1923

Mining district

District name West Shasta District

Mineral rights holdings

Type of mineral rights Patented

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner U. V.(Formerly-U. S. Smelting-Refining And Mining Co. 1923-1925
    Interest 100
    Home office California
    Year 1978

Reference information

Bibliographic references

  • 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

General comments

Subject category Comment text
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.
Deposit SEE SEQUENCE NO. 0060890475 FOR BENEFICIATION AND UNDERGROUND MINING METHODS EMPLOYED.

Reporter information

Type Date Name Affiliation Comment
Reporter 07-DEC-1994 Hillman U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Maps centered on this site

Authoritative California resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.