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Pedro Prospect

Occurrence in Tuolumne county in California, United States with commodity Manganese
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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. Economic information about the deposit and operations
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10033743
MRDS ID M020387
Record type Site
Current site name Pedro Prospect
Alternate or previous names Stonewall
Related records 10214405

Geographic coordinates

Geographic coordinates: -120.38128, 38.00158 (WGS84)
Relative position 2 MI. N. OF SONORA, ON TOP OF HILL 1/8 MI. W. OF HIGHWAY 49 , 0.1 MI. S. OF JUNCTION OF HIGHWAY 49 WITH ROAD TO COLUMBIA

Site location context

Political divisions (FIPS codes)

Tuolumne(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Columbia(quadrangle 1:24,000 scale)

San Andreas(quadrangle 1:100,000 scale)

Sacramento(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Tuolumne(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 Tuolumne

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 002N 014E 25 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Materials information

Materials Type of material
Psilomelane Ore
Pyrolusite Ore
Rhodonite Ore

Nearby scientific data

(1) -120.38128, 38.00158
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: ORE ON DUMP CONSISTS OF PARTIALLY OXIDIZED PINK RHODONITE, COATED BY BLACK OXIDES, PSILOMELANE AND PYROLUSITE. RHODONITE META CHERT IN PIT BOTTOM, PROBABLY NOT IN PLACE, IS RECRYSTALLIZED TO FINE GRAINED GRAY QUARTZITE, CONTAINING PATCHES AND GRAINS OF RHODONITE. BLOCK WAS DERIVED FROM BED AT LEAST 1 FT. THICK, AND 5 OR MORE FT. LONG. JUST N. OF PROSPECT IS A GRANITIC APPEARING ROCK, CLOSE TO BIOTITE DIORITE PORPHYRY

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Significant No

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 PP. 344 - 345

  • Deposit

    D.O.M. BULL. 125 1943 PP. 207 , 65

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1978 Killman, K.; 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.