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Boiler Pit Mine

Past Producer in Placer 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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Ownership information
  15. Production statistics
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10043712
MRDS ID M100621
Record type Site
Current site name Boiler Pit Mine
Alternate or previous names Sugrar Pine Chrome Mines

Geographic coordinates

Geographic coordinates: -120.76603, 39.11072 (WGS84)
Elevation 1158

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Foresthill(quadrangle 1:24,000 scale)

Truckee(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

North Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Tahoe 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 Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 015N 011E 29 NW OF SE OF SW California

Comments on the location information

  • MINE LOCATED IN A SHALLOW, NW TRENDING GULLEY JUST WEST OF ROAD LEADING FROM AUBURN-FOOTHILL RD. TO THE OLD SUGAR PINE GUARD STATION

Commodities

Commodity Importance
Chromium Critical Primary

Materials information

Materials Type of material
Chromite Ore

Analytical data

Result 45% CR2O3

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -120.76603, 39.11072
ListMap

Economic information

Ore body information

  • General form LENSE

Comments on the geologic information

  • DEPOSIT OCCURS NEAR THE CENTER OF A N-NW TRENDING PERIDOTITE BODY WHICH IS EXPOSED OVER AN AREA APPROXIMATELY 2 MILES BY SMILES AND IS BORDERED BY PALEOZOIC METAMORPHICS AND TERTIARY VOLCANICS.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1916

Mining district

District name Forest Hill Divide Area

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Victory Chrome Co.
    First year 1944
  • Type Owner
    Owner U.S. Government

Production statistics

  • Year 1916
    Material ORE CR
    Accuracy Estimate
    Description Ap_Grade: ^45% Cr2o3
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Cr2O3 Chromium Chromium 45wt-pct

Comments on the reserve resource information

  • CDMG MINERAL PROPORTY REPORT, 1975, UNPUBLISHED

Comments on the workings information

  • WORKINGS CONSISTED OF A PARTIALLY FILLED TRENCH AND A FEW SMALL DURMPS (1975).

Reference information

Bibliographic references

  • Deposit

    STINSON, M.C., 1975, CDMG MINERAL PROPERTY REPORT, UNPUBLISHED

  • Deposit

    RYNEARSON, G.A., 1953, CDMG BULL 134, PT. 3, CHAPT. 5, P. 209, 210, 306.

  • Deposit

    BRADLEY, W.W. ET. AL., 1918, CALIF. STATE MINING BUREAU BULL 76, P. 162

  • Production

    CDMG MINERAL PROPERTY REPORT, 1975, UNPUBLISHED

General comments

Subject category Comment text
Deposit ORE BODY HAD AN E-W STRIKE, A PITCH OF 30 S AND WAS 9 FT THICK IN THE FACE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1983 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.