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  3. Mineral Resource Data System (MRDS)

Oak Ridge Occurrence

Past Producer in Trinity 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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Mining district
  12. Land status
  13. Ownership information
  14. Production statistics
  15. Links to other databases
  16. Bibliographic references
  17. Reporter information

Geologic information

Identification information

Deposit ID 10043519
MRDS ID M100296
Record type Site
Current site name Oak Ridge Occurrence

Geographic coordinates

Geographic coordinates: -123.37529, 40.56678 (WGS84)
Elevation 396
Location accuracy 1000(meters)
Relative position 11 MILES W OF HAYFORK, CA., Assumed Spot At Center Of Sect. 10

Site location context

Political divisions (FIPS codes)

Trinity(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hyampom(quadrangle 1:24,000 scale)

Hayfork(quadrangle 1:100,000 scale)

Redding(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork Trinity(hydrologic unit)

Klamath(hydrologic accounting unit)

Klamath-Northern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Shasta-Trinity National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Trinity

Public Land Survey System information

Meridian Township Range Section Fraction State
Humboldt 002N 007E 10 California

Commodities

Commodity Importance
Chromium Critical Primary

Comments on the commodity information

  • ASSAY OF 1953 PRODUCTION

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result 49% CR2O3
Result CR TO FE RATIO 2.5 TO 1

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -123.37529, 40.56678
ListMap

Economic information

Comments on the geologic information

  • THE DEPOSIT OCCURS IN ONE OF SEVERAL DIKE LIKE PERIDOTITE BODIES THAT ARE NW TRENDING ACROSS CENTRAL TO SW TRINITY CO.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of last production 1955

Mining district

District name Indian Valley Area

Land status

Ownership category National Forest

Ownership information

  • Type Owner
    Owner Nagaar, Jim
    Home office Hayfork, Ca
  • Type Owner
    Owner Lough, E. A.
    Home office Hayfork, Ca

Production statistics

  • Year 1953
    Material ORE
    Accuracy Accurate
    Description Ap_Grade: ^49% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 49wt-pct

Reference information

Bibliographic references

  • Deposit

    O'BRIEN, J.C., 1965, CDMG COUNTY REPORT NO. 4, P. 58

  • Production

    CDMG COUNTY REPORT NO. 4, P. 58

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-82 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.