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Bear Creek

Past Producer in El Dorado county in California, United States with commodities Tungsten, 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. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Land status
  14. Production statistics
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10008588
MRDS ID D000898
Record type Site
Current site name Bear Creek
Alternate or previous names Comeback Consolidated

Geographic coordinates

Geographic coordinates: -120.75102, 38.83323 (WGS84)
Relative position 7 MILES NE OF PLACERVILLE AND 4 MILES DUE EAST OF SPANISH FLAT, NEAR BANK OF ROCK CREEK.

Site location context

Political divisions (FIPS codes)

El Dorado(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Garden Valley(quadrangle 1:24,000 scale)

Placerville(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

South Fork American(hydrologic unit)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Federal lands

Eldorado 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 El Dorado

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 011N 011E 04 California

Commodities

Commodity Importance
Tungsten Critical Primary
Gold Secondary

Materials information

Materials Type of material
Scheelite Ore
Calcite Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Schist

Nearby scientific data

(1) -120.75102, 38.83323
ListMap

Economic information

Ore body information

  • General form LENTICULAR
    Strike N-NW
    Dip 50-60W
    Width 0.91M

Controls for ore emplacement

  • Fractures

Comments on the geologic information

  • GEOL.DESC: LEMMON, D.M. DESCRIBES COUNTRY ROCK AS A PHYLLITE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Production years 1931-1932, 1941-1943

Land status

Ownership category National Forest

Production statistics

  • Year 1943
    Period 1931-1943
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Wo3 Tungsten Tungsten 5wt-pct

Workings at the site

  • Type of workings Underground
    Length 154.53M

Comments on the workings information

  • 187 FT. ADIT, 50 FT. ABOVE AND BELOW ADIT ARE TWO ADITS 80 FT. AND 240 FT. RESPECTIVELY

Reference information

Bibliographic references

  • Deposit

    CLARK, W.B. AND CARLSON, D.W., 1950; MINES AND MINERAL RESOURCES OF EL DORADO COUNTY; CALIF. JOUR. MINES AND GEOLOGY, VOL. 52 NO. 4; DIV. OF MINES, P. 439.

  • Deposit

    LEMMON, D.M.; TUNGSTEN DEPOSITS IN THE US; VOL. I; UNPUBLISHED DATA, P. 171.

  • Deposit

    LEMMON, D.M. AND TWETO, O.L., 1962; TUNGSTEN IN THE US; USGS MAP, MR-25.

  • Production

    CLARK AND CARLSON, 1956

General comments

Subject category Comment text
Deposit SCHEELITE IN CALCITE LENSES.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1974 Elliott, James E. U.S. Geological Survey
Updater 01-MAR-1979 Fraticelli, L. A. (Albers, J.) U.S. Geological Survey PARSED HOST ROCK AND ASSOCIATED ROCK INFORMATION FROM OLD SINGLE VALUED FIELD TO NEW MULTIVALUED FIELD
Editor 09-JUN-1995 Mosier, Dan 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.