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Hearst Ranch-Marmolejo Cr. Deposit

Occurrence 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. Nearby scientific data
  8. Economic information about the deposit and operations
  9. Mineral rights holdings
  10. Land status
  11. Ownership information
  12. Links to other databases
  13. Bibliographic references
  14. Reporter information

Geologic information

Identification information

Deposit ID 10262155
MRDS ID M020152
MAS/MILS ID 0060790006
Record type Site
Current site name Hearst Ranch-Marmolejo Cr. Deposit
Alternate or previous names Hearst Ranch-Marmolejo Creek, Hearst Ranch Prospect
Related records 10033556

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -121.16769, 35.69716 (WGS84)
Location accuracy 1000(meters)

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 026 S 007 E 01 California

Commodities

Commodity Importance
Manganese Critical Tertiary

Nearby scientific data

Ore Body (1) -121.16769, 35.69716
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Occurrence
Commodity type Metallic
Significant No
Discovery year 1942

Mineral rights holdings

Type of mineral rights Unknown

Land status

Ownership category Private

Ownership information

  • Type Owner
    Owner Hearst, William Randolph, Ranch
    Home office California
    Year 1974

Reference information

Bibliographic references

  • Deposit

    CALIF. STATE MINING BUR. BULLETIN 76, 1918, P. 70.

  • Deposit

    CALIF. DIV. MINES BULLETIN 152, 1950, P. 230.

  • Deposit

    U.S. BUR. MINE RI 5579, 1960, P. 44.

Reporter information

Type Date Name Affiliation Comment
Reporter 17-AUG-1992 Ridenour, James U.S. Bureau of Mines

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.