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  3. Mineral Resource Data System (MRDS)

Mariposa Flagstone Quarry

Producer in Mariposa county in California, United States with commodity Stone, Crushed/Broken
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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. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. Reporter information

Geologic information

Identification information

Deposit ID 10237303
MAS/MILS ID 0060430701
Record type Site
Current site name Mariposa Flagstone Quarry

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -120.02098, 37.48163 (WGS84)
Elevation 585
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

Mariposa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Catheys Valley(quadrangle 1:24,000 scale)

Merced(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Fresno River(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 006 S 018 E 20 SENWNW California

Commodities

Commodity Importance
Stone, Crushed/Broken Primary

Nearby scientific data

Ore Body (1) -120.02098, 37.48163
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Producer
Commodity type Non-metallic
Significant No

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Mariposa Flagstone Co.
    ID 400357
    Home office California
    Year 1979

Reference information

Bibliographic references

  • Deposit

    MSHA MINE FILE REFERENCE MAY 1979.

Reporter information

Type Date Name Affiliation Comment
Reporter 04-NOV-1983 Western Field Operations Center (WFOC) U.S. Bureau of Mines

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

Current status (per MSHA)

StatusIntermittent since 09/30/2019
MSHA mine ID0400357
Mine name (MSHA)Yosemite Slate Quarry
Current operatorMariposa Yosemite Slate Quarry
Current controller (parent)David R Butler
Mine typeSurface (Metal / non-metal)

MSHA cross-reference per the original MRDS record. Mine status and operator reflect MSHA's last published Mines export (February 2025); MSHA's public bulk feed has been unavailable since, so this may be out of date. See the Mine Data Retrieval System for current status.

Open MSHA's Mine Data Retrieval System for inspections, accidents, and violations for this mine.

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.