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Vallecito Western Mine Bishop Estate

Producer in Calaveras county in California, United States with commodities Gold, Silver
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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. Links to other databases
  10. Bibliographic references
  11. General comments
  12. Reporter information

Geologic information

Identification information

Deposit ID 10109171
MRDS ID M006421
Record type Site
Current site name Vallecito Western Mine Bishop Estate

Geographic coordinates

Point of reference Centroid
Geographic coordinates: -120.51242, 38.08398 (WGS84)
Relative position Original record had no geographic coordinates; these coordinates were derived from the PLSS description provided.

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Angels Camp(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Stanislaus(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California Calaveras

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003N 013E 23,24,26 California

Commodities

Commodity Importance
Gold Primary
Silver Primary

Economic information

Comments on the geologic information

  • GEOL.DESC: THE PAY GRAVEL IS LARGELY MADE UP OF GRANITE WITH A SMALL PROPORTION OF QUARTZ, QUARTZITE, JASPER, AND SLATE; GRAVEL IS HEAVY, WELL-ROUNDED, AND CONTAINS MANY LARGE BOULDERS. THE GOLD IS COARSE AND AVERAGES 895 FINE; THE BALANCE IS ALMOST ENTIRELY SILVER. THE RECOVERED GOLD AVERAGES ABOUT 0.17 OZ., OR $5.95 PER TON OF GRAVEL WASHED.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Comments on the production information

  • OVER $400,000 IN GOLD SINCE OPENED IN 1925.

Comments on the workings information

  • 167' VERTICAL SHAFT; TUNNEL; RAISES. GRAVEL IS MINED BY BREAST STOPING ACROSS THE FULL WIDTH OF THE PAYSTREAK.

Reference information

Bibliographic references

  • Deposit

    CALIF. V. 32, NO. 3, P. 353-55 AND PL. 6; B. 135, P. 247-251

  • Deposit

    REPT. 20, P. 6; REPT. 21, P 161; SP. REPT. 41, P. 52 AND PL. 3

  • Deposit

    CALIF. COUNTY REPT. NO. 2, P 92, 208 AND PL. C

General comments

Subject category Comment text
Deposit ADD. REF.: USGS MAP GQ-222

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-72 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.