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Shelley Mine

Past Producer in El Dorado county in California, United States with commodities Chromium, Iron
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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. Reporter information

Geologic information

Identification information

Deposit ID 10162681
MRDS ID M007805
MAS/MILS ID 0060170025
Record type Site
Current site name Shelley Mine
Alternate or previous names Shelly Mine, Wolf Mine
Related records 10029954

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -120.88022, 38.8338 (WGS84)
Elevation 567
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Coloma(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 011 N 010 E 05 SWSENE California

Commodities

Commodity Importance
Chromium Critical Tertiary
Iron Tertiary

Materials information

Materials Type of material
Chromite Unknown
Olivine Unknown
Pyroxene Unknown
Serpentine Unknown
Talc Unknown

Nearby scientific data

Main Entrance (1) -120.88022, 38.8338
ListMap

Economic information

Ore body information

  • Strike N00S
    Dip 70W
    Thickness 14M
    Length 52M
    Width 2M
    Area 1HA
    Depth to top 0M
    Field Value
    Type of Orebody #1 DISSEMINATED
    Shape of Orebody #1 TABULAR
    Type of Orebody #2 OTHER
    Shape of Orebody #2 IRREGULAR
    Primary mode of Origin MAGMATIC DIFFER
    Primary Ore Control LITHOLOGY
    Secondary Ore Control FAULTING
    Degree of Wallrock Alter. INTENSE
    Type of Wallrock Alter. #1 CARBONITIZATION
    Type of Wallrock Alter. #2 SILICIFICATION
    Strike And Dip N00S:70W
    Minimum Depth to Top 0
    Avg. Thick. Unconsol. Mat. 0
    Min. Thick. Unconsol. Mat. 0
    Total Surface Area (HA) 1
    Date of Last Modification 830316

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Significant No
Discovery year 1917
Year of first production 1917

Mining district

District name Coloma District

Mineral rights holdings

Type of mineral rights Fee Ownership

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner David And Cynthia Cole
    Interest 100
    Home office California
    Year 1976
  • Type Operator
    Owner Union Chrome Co, Last Operator
    Home office California
    Year 1976
    Last year 1918

Comments on the production information

  • PAST PRODUCTION 1284 TONS, GRADE30% CR2O3,ALL 1917-1918. NO OR RESERVE ESTIMATE, 10% CHANCE OF 100 TONS. LAND HAS BEEN DED AND WILL PROBABLY BE BUILT ON SOON -DEPLETED PROSPECT ANALYSIS BY CDMG IN 1976 GAVE FOLLOWING PERCENTAGES-MASSIVE 2 05.75,CR2O3 34.71,FEO 08.89,TOTAL FE 12.87,AL203 26.45,MGO CR/FE 2.38.DISSEMINATED ORE=S102 03.28,CR2O3 38.67,FEO 09.74 FE 12.87,AL203 26.45,MGO 14.09,CR/FE 2.63.

Reference information

Bibliographic references

  • Deposit

    CATER,FW.ET AL,1951,CAL DIV MINES BULL 134,PT 3,CH 4 P 111,1

  • Deposit

    TALIAFERRO,NL,1918,COOP WAR MIN INVEST CALIF,EL DORADO NO 22

Reporter information

Type Date Name Affiliation Comment
Reporter 27-FEB-1984 Wetzel, Nicholas 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.