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Greenhorn

Past Producer in Shasta county in California, United States with commodities Copper, Gold, Silver
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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. Alteration
  9. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Economic information about the deposit and operations
  15. Mining district
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10077601
MRDS ID W025304
Record type Site
Current site name Greenhorn
Alternate or previous names Warren Bros., Willow Creek Mines Inc.
Related records 10286721

Geographic coordinates

Geographic coordinates: -122.6961, 40.66402 (WGS84)
Elevation 838
Relative position 23 MILES N.W. OF REDDING

Site location context

Political divisions (FIPS codes)

Shasta(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

French Gulch(quadrangle 1:24,000 scale)

Redding(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Shasta

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 032N;031N 007W;007W 05,06;31 California

Commodities

Commodity Importance
Copper Primary
Gold Secondary
Silver Secondary

Comments on the commodity information

  • ORE CONSISTS OF 90 % PYRITE

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chalcopyrite Ore
Chrysocolla Ore
Copper Ore
Cuprite Ore
Malachite Ore
Pyrite Ore
Quartz Gangue

Alteration

  • (Local) Pyritization

Mineral occurrence model information

Model code 184
USGS model code 28a
Deposit model name Massive sulfide, kuroko
Mark3 model number 93

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite

Nearby scientific data

(1) -122.6961, 40.66402
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Faults; Planar Shape Of Gouge And Uncrushed Crystals Of Pyrite, Along With Slickenslide Surfaces On Sulfide Bodies Suggest There Faults To Be Pre-Mineral In Age, It'S Further Suggest That They May Have Served As Feeder Channels For Mineralizing Solutions. Forming Eastern Limit Of No. 1 And No. 2 Levels Is A Through-Going Fault With Possible Post-Mineral Dip-Slip Displacement Of 50 Ft. East Side Downdropped.

Ore body information

  • General form TABULAR
    Strike NW
    Dip NE
    Thickness 9.14M

Comments on the geologic information

  • GEOL.DESC: PRINCIPAL FORMATIONS IN AREA ARE BALAKALA RHYOLITE AND BRAGDON FORMATION, THEY ARE WITHIN OUTER PART OF SHASTA BALLY BATHOLITH AUREOLE. BALAKALA EXHIBITS A WEAK TO PROMINENT FOLIATION, BRAGDON IS NOW MOSTLY PHYLLITE. FEW DIKES AND SILLS NOT METAMORPHOSED, INTRUDE BOTH FORMATIONS, MAIN CONTACT BETWEEN BALAKALA AND BRAGDON FORMATION'S STRIKES N 60 W AND DIPS 30 - 50 DEG NE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes
Production years 1911 - 1913 , 1928 - 1930 , 1939

Mining district

District name West Shasta Copper - Zinc

Production statistics

  • Year 1913
    Material CU AVG
    Description Ap_Grade: ^Cu 10%
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 10wt-pct
  • Year 1930
    Material CU AVG
    Description Ap_Grade: ^7-10% Cu, .1oz/Ton, Ag .8oz/Ton
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Copper Copper 9wt-pct
    Minor Silver Silver 3g/mt

Workings at the site

  • Type of workings Underground
    Length 4267.2M

Comments on the workings information

  • DEPOSIT DEVELOPED BY WORKINGS AT 10 DIFFERENT LEVELS BETWEEN 1,833 - 2,269 FT. IN ELEVATION. 14,000 FT. OF DRIFTS, RAISES AND STOPES, ORE WAS MINED BY ROOM AND PILLAR STOPING WITH OCCASIONAL TIMBER SUPPORT.

Reference information

Bibliographic references

  • Deposit

    ALBERS, J. P., 1965 , ECONOMIC GEOLOGY OF THE FRENCH GULCH QUADRANGLE SHASTA AND TRINITY COUNTIES, CALIF., SPECIAL REPORT 85 , CALIF. DIV. MINES AND GEOLOGY, PG. 35 - 36 .

  • Deposit

    LYDON, P. A. AND O'BRIEN, J. C., 1974 , MINES AND MINERAL RESOURCES OF SHASTA COUNTY CALIF., COUNTY REPORT 6 , CALIF. DIV. MINES AND GEOLOGY, PG. 35 - 37 .

  • Production

    LYDON, P. A. AND O'BRIEN; PG. 36 , (SEE REF.)

General comments

Subject category Comment text
Deposit PROMINENT GOSSAN ON SURFACE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1978 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey

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.