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  3. Mineral Resource Data System (MRDS)

Sheppard

Occurrence 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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10030091
MRDS ID M008011
Record type Site
Current site name Sheppard

Geographic coordinates

Geographic coordinates: -120.88242, 38.84601 (WGS84)
Relative position NR. N1/4 COR. (PL. 8) LOCATED ON CREST OF A LOW RIDGE ABOUT 2 MILES WEST-NORTH WEST OF GARDEN VALLEY.

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 012N 010E 32 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -120.88242, 38.84601
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Union Chrome Co.
    First year 1918

Comments on the production information

  • PRODUCED MORE THAN 50 LONG TONS OF ORE CONTAINING 34 OR 35 PERCENT CR2O3 PRIOR TO AUGUST, 1918, AT WHICH TIME ORE WAS BEING MINED AT RATE OF ABOUT 50 LONG TONS PER MONTH. A FEW TONS OF ORE REMAINS IN PLACE. IDLE SINCE 1918.

Comments on the workings information

  • OPEN CUTS, SHAFTS, SHORT DRIFTS

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, P 474

  • Deposit

    DOM BULL. 134, PT. 3, CHAP. 4, PP. 159-160, PL. 8

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. 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.