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  3. Mineral Resource Data System (MRDS)

Pillikin Mine Area 8

Past Producer in El Dorado county in California, United States with commodity Chromium
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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. Host and associated rocks
  10. Nearby scientific data
  11. Ore body information
  12. Economic information about the deposit and operations
  13. Mining district
  14. Reserves and resources
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10048021
MRDS ID M700421
Record type Site
Current site name Pillikin Mine Area 8

Geographic coordinates

Geographic coordinates: -121.09242, 38.791 (WGS84)
Relative position APPROX. 5.5 AIRLINE MI SW OF PILOT HILL

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Pilot Hill(quadrangle 1:24,000 scale)

Sacramento(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North 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 011N 008E 21 California

Comments on the location information

  • LOCATED ON ZANTGRAF GOLD MINE PROPERTY.

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Alteration

  • (Local) Serpentinization, Silicification, Alteration To Talc

Analytical data

Result ORE HIGH-GRADE - 40% CR2O3

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Pyroxenite
  • Host or associated Host
    Rock type Plutonic Rock > Ultramafic Intrusive Rock > Peridotite > Dunite

Nearby scientific data

(1) -121.09242, 38.791
ListMap

Economic information

Ore body information

  • General form LENSES, LAYERS
    Thickness 30.48M
    Length 213.36M
    Width 91.44M

Comments on the geologic information

  • ORE BEARING LAYERS UP TO 24 IN THICK IN PLACES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Flagstaff Hill Area

Reserves and resources

  • Type In-situ
    Estimate year 1940
    Total resources 226000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 40 wt-pct Chromium Major 1940

Comments on the workings information

  • WORKINGS CONSISTED OF SIX PITS AND SHORT ADITS, WHICH COLLAPSED IN 1951.

Reference information

Bibliographic references

  • Deposit

    CDMG BULL 134, P. 143

  • Deposit

    USGS BULL 922-0, P. 455

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-1980 Oster, Karel L. (Albers, John P.) 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.