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Robie

Prospect in Mariposa 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. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10030813
MRDS ID M009253
Record type Site
Current site name Robie
Related records 10115011

Geographic coordinates

Geographic coordinates: -120.27988, 37.70242 (WGS84)
Relative position ON THE ROBIE RANCH 0.8 OF A MILE WEST OF GRANITE SPRINGS SCHOOL AND 7 MILES WEST OF COULTERVILLE VIA HIGHWAY 132.

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Penon Blanco Peak(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)

Geographic areas

Country State County
United States California Mariposa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 003S 015E 02 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Materials information

Materials Type of material
Psilomelane Ore

Analytical data

Result ORE GRADE 30 PERCENT MANGANESE

Nearby scientific data

(1) -120.27988, 37.70242
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: MASSIVE TO THICK BEDDED WHITE CHERT PENETRATED BY BANDS AND STRINGERS OF PSILOMELANE. CHERT STRIKES N. 10 W., DIPPING CLOSE TO VERTICAL AND IS PART OF THE AMADOR GROUP, THE HUNTER VALLEY CHERT.

Economic information about the deposit and operations

Development status Prospect
Commodity type Metallic
Significant No

Ownership information

  • Type Owner
    Owner John L. Robie
    First year 1942

Comments on the workings information

  • ONE SHALLOW PIT WAS THE ONLY WORKING IN 1942.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS. 1 & 2, JAN. - APRIL, 1957, P. 326

  • Deposit

    DOM BULL. 152, 1950, P. 110

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1973 Gere, W. U.S. Geological Survey
Updater 01-DEC-1977 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.