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  3. Mineral Resource Data System (MRDS)

Keystone Mine

Past Producer in San Luis Obispo county in California, United States with commodity Mercury
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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. Land status
  10. Links to other databases
  11. Bibliographic references
  12. Reporter information

Geologic information

Identification information

Deposit ID 10165233
MRDS ID M055782
MAS/MILS ID 0060790118
Record type Site
Current site name Keystone Mine
Related records 10040899

Geographic coordinates

Point of reference Main Entrance
Geographic coordinates: -121.07569, 35.65966 (WGS84)
Elevation 573
Location accuracy 100(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

Pebblestone Shut-in(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 008 E 23 N2NWSE California

Commodities

Commodity Importance
Mercury Primary

Nearby scientific data

Main Entrance (1) -121.07569, 35.65966
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Land status

Ownership category Unknown

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 35, 1939, P. 433.

  • Deposit

    U.S. GEOLOGICAL SURVEY BULLETIN 922-R, 1941, P. 548-549, 572-573.

  • Deposit

    U.S. BUREAU OF MINES IC 8252, 1965, P. 195.

Reporter information

Type Date Name Affiliation Comment
Reporter 20-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.

External references

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.