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Little Rock Mine

Past Producer in Fresno 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. Ore body information
  10. Economic information about the deposit and operations
  11. Mining district
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10098542
MRDS ID M100102
Record type Site
Current site name Little Rock Mine
Alternate or previous names Poison Oak, Buckhorn Mine

Geographic coordinates

Geographic coordinates: -119.34957, 36.903 (WGS84)
Location accuracy 1000(meters)
Relative position LOCATED ON CREST OF HOG MOUNTAIN RIDGE ON LINE BETWEEN SECTIONS 9 & 10, Assumed Spot At Center Of Boundary Bet. Sect. 9, 10.

Site location context

Political divisions (FIPS codes)

Fresno(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Trimmer(quadrangle 1:24,000 scale)

Fresno(quadrangle 1:100,000 scale)

Fresno(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Dry(hydrologic unit)

Tulare-Buena Vista Lakes(hydrologic accounting unit)

Tulare-Buena Vista Lakes(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Fresno

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 012S 024E 09;10 California

Commodities

Commodity Importance
Chromium Critical Primary

Comments on the commodity information

  • 20 LONG TONS BANDED AND EVENLY DISSEMINATED ORE WITH 20-30% CR2O3, STACKED ON DUMP

Materials information

Materials Type of material
Chromite Ore

Nearby scientific data

(1) -119.34957, 36.903
ListMap

Economic information

Ore body information

  • General form IRREGULAR

Comments on the geologic information

  • THE CHROMITE DEPOSITS OF WATTS VALLEY OCCUR ON THE EASTERN LIMB OF A SYNCLINAL, NE PLUNGING ULTRAMAFIC SILL. THE EASTERN LIMB, KNOWN AS HOG MOUNTAIN, IS A LITTLE OVER A MILE WIDE, WHILE THE WESTERN LIMB, WHICH FORMS RED MOUNTAIN, AVERAGES 3 MILES WIDE. THE TWO LIMBS JOIN TO THE NW AND TOGETHER FORM A DISCONTINUOUS TRIANGULAR EXPOSURE OF PERIDOTITE 10 MILES LONG AND 8 MILES WIDE ACROSS THE BASE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Watts Valley Area

Reference information

Bibliographic references

  • Deposit

    CDMG 134, PART 3, CHAPTER 3, P. 86

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUL-80 Oster, Karel L. (Albers, John P.) 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.