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Lost and Found

Past 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. Materials information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Ownership information
  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 10031019
MRDS ID M009569
Record type Site
Current site name Lost and Found
Related records 10114794

Geographic coordinates

Geographic coordinates: -120.0771, 37.58187 (WGS84)
Elevation 762
Relative position TWO MI. NE 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)

Upper Merced(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 004S 017E 15,22 California

Commodities

Commodity Importance
Gold Primary

Materials information

Materials Type of material
Quartz Gangue

Analytical data

Result ASSAYS FROM $30 - $1100 AU/TON

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Slate

Nearby scientific data

(1) -120.0771, 37.58187
ListMap

Economic information

Ore body information

  • Strike NW
    Dip 90 DEG NE
    Depth to top 0M

Economic information about the deposit and operations

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

Ownership information

  • Type Operator
    Owner John Naimo
    First year 1927

Workings at the site

  • Type of workings Underground
    Length 182.88M
    Overall depth 12.19M

Comments on the workings information

  • SEVEN SHAFTS, 30 TO 40 FT. IN DEPTH; FOUR TUNNELS, 200, 100, 65 AND 25 FT. IN LENGTH.

Reference information

Bibliographic references

  • Deposit

    LAIZURE, C. MCK., 1928 , SAN FRANCISCO FIELD DIVISION IN TWENTY-FOURTH REPORT OF THE STATE MINERALOGIST: CALIFORNIA STATE MINING BUREAU. P. 95 , 96

General comments

Subject category Comment text
Deposit VEIN WITH SEVERAL SMALLER VEINS ( TO 5 FT) .
Deposit COMPRISES EIGHT CLAIMS AND TWO MILL SITES, ONE OF THE LATTER ON THE MERCED RIVER. APPLICATION FOR PATENT WAS BEING MADE IN 1927.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-JAN-1979 Bowman, J. And Albers, J. 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.