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Mine

Producer in Sierra county in California, United States with commodities Chromium, Gold
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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. Ore body information
  9. Economic information about the deposit and operations
  10. Mining district
  11. Land status
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10077660
MRDS ID W025463
Record type Site
Current site name Mine
Related records 10213783

Geographic coordinates

Geographic coordinates: -120.85965, 39.60627 (WGS84)
Elevation 1622

Site location context

Political divisions (FIPS codes)

Sierra(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Downieville(quadrangle 1:24,000 scale)

Portola(quadrangle 1:100,000 scale)

Chico(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Yuba(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 Sierra

Public Land Survey System information

Meridian Township Range Section Fraction State
020N 010E 09 California

Comments on the location information

  • LOCATED ON LINE BETWEEN SECT. 9 AND 16.

Commodities

Commodity Importance
Chromium Critical Primary
Gold Secondary

Analytical data

Result ORE CONTAINED 41.41 % CR203
Result CR TO FE RATIO 1.86

Nearby scientific data

(1) -120.85965, 39.60627
ListMap

Economic information

Ore body information

  • General form LENSE
    Length 6.1M
    Width 2.44M
    Depth to bottom 7.92M

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Downieville Area

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner C. L. Best, Ruby-Oxford Mines
    First year 1943
  • Type Owner
    Owner White Bear Mining Co.
    First year 1942

Comments on the production information

  • TOTAL PRODUCTION APPROX. 329 LT 1918-1943.

Reference information

Bibliographic references

  • Deposit

    RYNEARSON, G.A., 1953, CDMG BULL 134, PT. 3, CHAPT.5P. 252, 253.

  • Deposit

    ON SEC.LINE 9,16;

  • Production

    CDMG BULL 134, PT. 3, CHAPT. 5, P. 253.

General comments

Subject category Comment text
Deposit DEPOSIT STRIKES N AND DIPS 40E.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-SEP-1982 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.