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Small Prospect Mar John

Occurrence in Calaveras county in California, United States with commodity Cobalt
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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. Reporter information

Geologic information

Identification information

Deposit ID 10029487
MRDS ID M007036
Record type Site
Current site name Small Prospect Mar John
Related records 10187462

Geographic coordinates

Geographic coordinates: -120.44183, 38.18185 (WGS84)
Relative position IN NW1/4 OF SEC., ABOUT A MI. BY TRAIL FROM THE MURPHY-SHEEP RANCH ROAD AND ON TOP OF A RIDGE AT ELEV. 3000'+.

Site location context

Political divisions (FIPS codes)

Calaveras(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Murphys(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Calaveras(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 004N 014E 21 California

Commodities

Commodity Importance
Cobalt Critical Primary

Economic information

Comments on the geologic information

  • GEOL.DESC: STRINGER OF ORE, ONLY A FEW INCHES WIDE BETWEEN A MICA SCHIST FOOTWALL AND QUARTZITE HANGING WALL. ONLY A FEW HUNDRED POUNDS OF ORE HAD BEEN FOUND, BUT SAMPLES INDICATED IT WAS OF GOOD GRADE. COBALT DIARSENIDE (SMALTITE) WITH ERYTHRITE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Comments on the workings information

  • A SURFACE CUT 15' LONG AND 3' DEEP HAD BEEN MADE ON THE ORE STRINGER. IDLE.

Reference information

Bibliographic references

  • Deposit

    CALIF. REPT. 20, P. 4

  • Deposit

    CALIF. COUNTY REPT. NO. 2, P. 131

  • Deposit

    USBM I.C. 8103

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 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.