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  3. Mineral Resource Data System (MRDS)

Joerger

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 10029630
MRDS ID M007302
Record type Site
Current site name Joerger
Related records 10162972

Geographic coordinates

Geographic coordinates: -121.0652, 38.67573 (WGS84)
Relative position SW1/4 (PL.8, BULL. 134, PT. 3, CHAP. 4). LOCATED 1 1/2 MI. NW OF CLARKSVILLE.

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Clarksville(quadrangle 1:24,000 scale)

Sacramento(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 010N 008E 35 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Bertha J. Burton

Comments on the production information

  • SOME WORK DONE DURING WWI BUT MOST OF ORE FROM THIS PROPERTY MINED IN 1942. EXACT TONNAGE NOT KNOWN AS IT WAS INCLUDED IN COMBINED TONNAGE FROM SEVERAL OTHER MINES. EST. ORE RESERVES ARE 10,000 TO 15,000 TONS CONTAINING 5 TO 8 PERCENT CR2O3. ORE MILLED IN 1942 AVERAGED 8 PERCENT CR2O3.

Comments on the workings information

  • OPEN PIT 150 FT. LONG, 15 TO 40 FT. WIDE, AND 25 FT. DEEP.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, PP. 387, 471

  • Deposit

    DOM BULL. 134, PT. 3, CHAP 4, P. 126 AND 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.