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Murphy

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. 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 10109202
MRDS ID M007356
Record type Site
Current site name Murphy

Geographic coordinates

Geographic coordinates: -120.95519, 38.54629 (WGS84)
Relative position SE1/4. PROBABLY THE LOCATION IS THE OPEN PIT WORKING SHOWN NEAR THE SOUTH LINE OF THE SECTION ON USGS QUAD. LATROBE, CALIF. 1950.

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Latrobe(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Cosumnes(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(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 008N 009E 14 California

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -120.95519, 38.54629
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Ownership information

  • Type Operator
    Owner Edward Hadsel And Jerry Grant
  • Type Owner
    Owner W. C. Egloff

Comments on the production information

  • ABOUT 3000 TONS OF ORE FROM PROPERTY MILLED DURING WWI AND IN 1942 2000 TONS OF ORE WERE PRODUCED. DURING FIRST HALF OF 1953 ABOUT 100 TONS OF ORE PER DAY WERE PRODUCED FOR A FEW MONTHS WITH AVERAGE TENOR SAID TO BE 14 PERCENT CR2O3. IDLE SINCE 1953.

Comments on the workings information

  • TWO OPEN PITS, THE LARGER BEING 200 FT. LONG AND 10 TO 30 FT. WIDE WITH A 25-FT. FACE AT NORTH END.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, P. 387, 472

  • Deposit

    DOM BULL. 134, PT. 3, CHAP 4, PP. 123-4, 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.