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Pine Tree and Josephine Mine

Producer in Mariposa county in California, United States with commodity 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. Economic information about the deposit and operations
  9. Ownership information
  10. Links to other databases
  11. Bibliographic references
  12. General comments
  13. Reporter information

Geologic information

Identification information

Deposit ID 10031010
MRDS ID M009558
Record type Site
Current site name Pine Tree and Josephine Mine
Related records 10285214

Geographic coordinates

Geographic coordinates: -120.12016, 37.58742 (WGS84)
Elevation 636
Relative position ON HIGHWAY 49, 2 MI. N. OF BEAR VALLEY

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Bear Valley(quadrangle 1:24,000 scale)

Oakdale(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 04S 17E 08,09,16,17 California

Commodities

Commodity Importance
Gold Primary

Nearby scientific data

(1) -120.12016, 37.58742
ListMap

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No
Discovery year 1849

Ownership information

  • Type Operator
    Owner Pacific Mining Co.

Comments on the production information

  • ESTIMATED PRODUCTION IS OVER $4,000,000. LAST PERIOD OF OPERATION 1939-1944 YIELDING 35,215 OZ. GOLD AND 8219 OZ. SILVER FROM A TOTAL OF 248,481 TONS OF ORE, OR A GROSS OF ABOUT $1,242,000. PROPERTY IDLE SINCE 1944 BUT IS NO MEANS EXHAUSTED OF ORE AND AWAITS MORE FAVORABLE ECONOMIC CONDITIONS.

Comments on the workings information

  • TOTAL LENGTH IN JOSEPHINE WORKINGS ABOUT 7700 FT.; WORKINGS IN PINE TREE AGGREGATE OVER 8 MILES.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS. 1 & 2, JAN.-APRIL, 1957, PP. 151-155, 296

  • Deposit

    REPORT OF STATE MINERALOGIST XXIV, PP 91, 110

  • Deposit

    CALIF. JOUR. MINES & GEOL. V. 53, NOS. 3 & 4, P. 552; ADD. REF.: 17TH REPT. ST. MIN. P. 119, 133

General comments

Subject category Comment text
Deposit INCLUDED IN ABOUT 5-1/3 SQ. MILES BELONGING TO PAC. MNG. CO., IN WHICH ARE ALSO LOCATED THE FRENCH, EVANS AND QUEEN SPECIMEN MINES. ORE MINERALS ARE CHIEFLY PYRITE, ARSENOPYRITE, NATIVE GOLD WITH MINOR CHALCOPYRITE, SPHALERITE, GALENA, NICCOLITE AND MILLERITE. COPPER IS THE ONLY OTHER MINERAL RECOVERED OTHER THAN GOLD OR SILVER. ERYTHRITE AND DANAITE, BOTH CONTAINING COBALT HAVE BEEN FOUND BUT PRESUMABLY ARE RARE AND WELL DISSEMINATED AND NO ATTEMPT HAS BEEN MADE TO RECOVER NICKEL OR COBALT. COPPER PRODUCTION LESS THAN 1000,000 LBS. - D.O.M. BULL. 144, PT. 3, 1948, P. 269 GERSDORFFITE HAS BEEN REPORTED AS OCCURRING WITH GARNIERITE IN THE PINE TREE MINE. - CALIF. JOUR. MINES & GEOL. V. 37, NO. 3, JULY, 1941, P. 491

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. 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.