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  3. Mineral Resource Data System (MRDS)

Irish Ranch

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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mineral rights holdings
  10. Reserves and resources
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10259959
MRDS ID M008447
MAS/MILS ID 0060170016
Record type Site
Current site name Irish Ranch
Related records 10030378

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -120.91042, 38.6502 (WGS84)
Elevation 396
Location accuracy 1000(meters)

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Shingle Springs(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 009 N 010 E 07 California

Commodities

Commodity Importance
Chromium Critical Tertiary

Nearby scientific data

Ore Body (1) -120.91042, 38.6502
ListMap

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Significant No

Mineral rights holdings

Type of mineral rights Unknown
Type of mineral rights Unknown
Type of mineral rights Unknown

Reserves and resources

  • Type In-situ
    Estimate year 1940
    Total resources 23000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 3 wt-pct Chromium Trace 1940
  • Type In-situ
    Estimate year 1940
    Inferred 22000000mt ore
    Total resources 22000000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 5 wt-pct Chromium Trace 1940
  • Type In-situ
    Estimate year 1940
    Inferred 3700000mt ore
    Total resources 3700000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 10 wt-pct Chromium Trace 1940
  • Type In-situ
    Estimate year 1940
    Total resources 500000mt ore
    Commodity Subtype Grade units Group Importance Year
    Chromium Cr2O3 20 wt-pct Chromium Trace 1940

Reference information

Bibliographic references

  • Deposit

    22 ND RPRT STATE MNRLGST P 405.

  • Deposit

    ALSO IN 8.

Reporter information

Type Date Name Affiliation Comment
Reporter 22-MAY-1986 Western Field Operations Center (WFOC) 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.