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  3. Mineral Resource Data System (MRDS)

Grandad Mine

Past Producer in Kern county in California, United States with commodity Tungsten
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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. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Production statistics
  14. Workings at the site
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10103229
MRDS ID M022506
Record type Site
Current site name Grandad Mine
Alternate or previous names Miranda
Related records 10115084

Geographic coordinates

Geographic coordinates: -118.38536, 35.69887 (WGS84)
Relative position 6 1/2 MILES NE OF ISABELLA DAM

Site location context

Political divisions (FIPS codes)

Kern(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lake Isabella North(quadrangle 1:24,000 scale)

Isabella Lake(quadrangle 1:100,000 scale)

Bakersfield(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Kern(hydrologic unit)

Tulare-Buena Vista Lakes(hydrologic accounting unit)

Tulare-Buena Vista Lakes(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Kern

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 026S 033E 01 California

Comments on the location information

  • NE 1/4, UTM ACC.

Commodities

Commodity Importance
Tungsten Critical Primary

Materials information

Materials Type of material
Scheelite Ore
Diopside Gangue
Garnet Gangue
Quartz Gangue

Analytical data

Result MINED ORE AVG. .2 - .3% WO3

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite

Nearby scientific data

(1) -118.38536, 35.69887
ListMap

Economic information

Ore body information

  • Strike N 5 W
    Dip 50 NE
    Length 15.24M
    Width 2.13M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1939, 1940

Mining district

District name Kernville

Production statistics

  • Year 1940
    Period 1940
    Material CONC
    Accuracy Accurate
    Description Cp_Grade: ^50% Wo3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major WO3 Conc. Tungsten Tungsten 50wt-pct

Comments on the production information

  • TOTAL PRODUCTION NOT AVAILABLE

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 9.14M

Comments on the workings information

  • 30 FT. SHAFT NOW PARTLY CAVED AND SHALLOW PROSPECT PITS.

Reference information

Bibliographic references

  • Deposit

    TROXEL, B. W., AND MORTON, P. K., 1962, MINES AND MINERAL RESOURCES OF KERN COUNTY, CALIFORNIA: CAL. DIV. MINES AND GEOLOGY, COUNTY REPORT 1, P. 300, 316

  • Production

    TROXEL AND MORTON, 1962

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1979 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.