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Big Pine Mine

Past Producer in Placer county in California, United States with commodities Gold, Silver, Lead, Copper
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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. Production statistics
  13. Workings at the site
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10007703
MRDS ID C012178
Record type Site
Current site name Big Pine Mine
Alternate or previous names T.W.A.
Related records 10189227

Geographic coordinates

Geographic coordinates: -121.08603, 38.8885 (WGS84)
Elevation 329
Relative position 2 MI. SW AUBURN

Site location context

Political divisions (FIPS codes)

Placer(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Auburn(quadrangle 1:24,000 scale)

Sacramento(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Sacramento(hydrologic accounting unit)

Sacramento(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Placer

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 012N 008E 16 California

Comments on the location information

  • UTM EST. NW 1/4 , SE 1/4

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Lead Secondary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Quartz Gangue

Analytical data

Result ASSAYS AVG. $10 AU/TON

Nearby scientific data

(1) -121.08603, 38.8885
ListMap

Economic information

Ore body information

  • Thickness 0.46M

Comments on the geologic information

  • CHALCOPYRITE REPORTED TO DEPTH OF 170 FT.

Economic information about the deposit and operations

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

Mining district

District name Ophir

Production statistics

  • Year 1907
    Period 1898-1907
    Accuracy Estimate
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 9g/mt

Comments on the production information

  • WORKED IN 1935. NO OTHER PRODUCTION RECORD FOUND.

Workings at the site

  • Type of workings Underground
    Length 304.8M
    Overall depth 121.92M

Comments on the workings information

  • DRIFTS, SHAFT

Reference information

Bibliographic references

  • Deposit

    LOGAN, C. A., 1936 , GOLD MINES OF PLACER COUNTY, CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 32 , NO. 1 , P. 39 .

  • Deposit

    WARING, CLARENCE A., 1917 , PLACER COUNTY: REPORT 15 OF THE STATE MINERALOGIST, CALIFORNIA STATE MINING BUREAU, P. 327 .

  • Deposit

    GOODWIN, J. G., 1957 , LEAD AND ZINC IN CALIFORNIA: CALIFORNIA JOURNAL OF MINES AND GEOLOGY, V. 57 , NOS. 3 AND 4 , P. 589 .

  • Deposit

    ERIC, J. C., 1948 , TABULATION OF COPPER DEPOSITS IN CALIFORNIA IN COPPER IN CALIFORNIA: CALIFORNIA DIVISION OF MINES BULLETIN 144 , P. 281 .

  • Production

    LOGAN, 1936 , GOODWIN, 1957

General comments

Subject category Comment text
Deposit VEIN AVG. 18 IN. THICK

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1979 Nelson, Scott C. (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.