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Hearst Ranch - Red Rock Deposit

Producer in San Luis Obispo 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. Host and associated rocks
  9. Nearby scientific data
  10. Economic information about the deposit and operations
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10033557
MRDS ID M020153
Record type Site
Current site name Hearst Ranch - Red Rock Deposit
Related records 10237538

Geographic coordinates

Geographic coordinates: -121.14682, 35.6569 (WGS84)
Relative position ON THE HEARST RANCH OF SAN SIMEON, 41 MI. FROM THE RAILROAD AT SAN LUIS OBISPO.

Site location context

Political divisions (FIPS codes)

San Luis Obispo(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

San Simeon(quadrangle 1:24,000 scale)

Cambria(quadrangle 1:100,000 scale)

San Luis Obispo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Central Coastal(hydrologic unit)

Central California Coastal(hydrologic accounting unit)

Central California Coastal(hydrologic subregion)

California(hydrologic region)

Geographic areas

Country State County
United States California San Luis Obispo

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 026S 007E 13 California

Comments on the location information

  • LAT/LONG ESTIMATED AT HEARST RANCH.; LATITUDE-LONGITUDE VALUES CALCULATED FROM TOWNSHIP, RANGE, SECTION.

Commodities

Commodity Importance
Manganese Critical Primary

Materials information

Materials Type of material
Psilomelane Ore

Analytical data

Result AVERAGE MORE THAN 40 PERCENT MANGANESE

Host and associated rocks

  • Host or associated Host
    Rock type Metamorphic Rock > Serpentinite

Nearby scientific data

(1) -121.14682, 35.6569
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: COUNTRY ROCK IS LARGELY SERPENTINE. A SMALL FAULT SLIVER OF SANDSTONE IS ASSOCIATED WITH THE ORE. NODULES OF MANGANESE OXIDE ORE IN FAULTED SERPENTINE CONSIST OF A CORE OF A MASSIVE HARD BROWNISH-BLACK OXIDE, PROBABLY PSILOMELANE. NODULES APPEAR TO BE SUPERFICIAL CONCENTRATIONS OF MANGANESE OXIDE, POSSIBLY FROM WEATHERING OF SANDSTONE, WHICH CONTAINS SOME DISSEMINATED MANGANESE OXIDE, OR FROM WEATHERING OF A FORMERLY PRESENT MANGANIFEROUS CHERT. NODULES OCCUR ONLY NEAR SURFACE, AND ARE UP TO 5 FT. IN DIAMETER.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No

Reference information

Bibliographic references

  • Deposit

    D.O.M. BULL. 152 1950 P. 231

  • Deposit

    D.O.M. BULL. 125 1943 P. 168

General comments

Subject category Comment text
Deposit COUNTRY ROCK IS LARGELY SERPENTINE. A SMALL FAULT SLIVER OF SANDSTONE IS ASSOCIATED WITH THE ORE. NODULES OF MANGANESE OXIDE ORE IN FAULTED SERPENTINE CONSIST OF A CORE OF A MASSIVE HARD BROWNISH-BLACK OXIDE, PROBABLY PSILOMELANE. NODULES APPEAR TO BE SUPERFICIAL CONCENTRATIONS OF MANGANESE OXIDE, POSSIBLY FROM WEATHERING OF SANDSTONE, WHICH CONTAINS SOME DISSEMINATED MANGANESE OXIDE, OR FROM WEATHERING OF A FORMERLY PRESENT MANGANIFEROUS CHERT. NODULES OCCUR ONLY NEAR SURFACE, AND ARE UP TO 5 FT. IN DIAMETER.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1978 Killman, K.; Albers, J. U.S. Geological Survey REPLACING LOST LOCATION.
Updater 12-NOV-1997 Oland, G. P. (Orris, Greta J.) U.S. Geological Survey OLAND AND ORRIS MERGED RECORDS
Editor 08-MAY-1998 Mason, George 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

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