1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Hollister Dolamite Quarry

Past Producer in San Benito county in California, United States with commodity Magnesite
Map
XML
JSON
KML
C
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 10189120
MRDS ID W024669
MAS/MILS ID 0060690030
Record type Site
Current site name Hollister Dolamite Quarry
Alternate or previous names Westvaco, O'Hara Ranch
Related records 10077202

Geographic coordinates

Point of reference Ore Body
Geographic coordinates: -121.38291, 36.74183 (WGS84)
Elevation 457
Location accuracy 100(meters)

Site location context

Political divisions (FIPS codes)

San Benito(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Mount Harlan(quadrangle 1:24,000 scale)

Monterey(quadrangle 1:100,000 scale)

Monterey(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Pajaro(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 Benito

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 014 S 005 E 02 SE California

Commodities

Commodity Importance
Magnesite Tertiary

Nearby scientific data

Ore Body (1) Mesozoic granitic rocks, unit 1 (Salinian Block)
ListMap

Economic information

Economic information about the deposit and operations

Operation type Surface
Development status Past Producer
Commodity type Metallic
Significant No

Land status

Ownership category Unknown

Ownership information

  • Type Owner-Operator
    Owner San Benito Aggregates, In
    ID 400111

Reference information

Bibliographic references

  • Deposit

    CALIF. DIV. MINES SPECIAL REPORT 56, P. 22, 37.

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 43, P. 49-50, 278-279.

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 22, 1926, P. 234-235.

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 47, 1951, P. 354, 402.

  • Deposit

    CALIF. JOUR. MINES AND GEOL., V. 51, 1954, P. 358.

  • Deposit

    CALIF. DIV. MINES AND GEOL. SPECIAL PUBLICATIONS 103, 1990.

Reporter information

Type Date Name Affiliation Comment
Reporter 28-FEB-91 Lowe, Nathan T. 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 05/29/2023
MSHA mine ID0400111
Mine name (MSHA)Cal Rock Products LLC
Current operatorCal Rock Products LLC
Current controller (parent)David P Grimsley
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.