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Middle Fork Creek Borate Deposits

Occurrence in Ventura county in California, United States with commodities Boron-Borates, Gypsum-Anhydrite
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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. Geologic structures
  11. Economic information about the deposit and operations
  12. Mining district
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10023822
MRDS ID I003015
Record type Site
Current site name Middle Fork Creek Borate Deposits
Alternate or previous names Mammoth Claim, Center Creek Claim, Baldwin Claim, Gib Claim, Jumbo Claim

Geographic coordinates

Geographic coordinates: -119.12565, 34.76971 (WGS84)
Relative position ON MIDDLE FORK OF LOCKWOOD CREEK.

Site location context

Political divisions (FIPS codes)

Ventura(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Sawmill Mountain(quadrangle 1:24,000 scale)

Cuyama(quadrangle 1:100,000 scale)

Los Angeles(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Santa Clara(hydrologic unit)

Ventura-San Gabriel Coastal(hydrologic accounting unit)

Southern California Coastal(hydrologic subregion)

California(hydrologic region)

Federal lands

Los Padres National Forest(National Forest)

National Forest FS(Type of land area)

FS(Federal land areas administered by FS)

Geographic areas

Country State County
United States California Ventura

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 008N 021W 20,21 California

Commodities

Commodity Importance
Boron-Borates Primary
Gypsum-Anhydrite Tertiary

Materials information

Materials Type of material
Colemanite Ore
Gypsum Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Mafic Volcanic Rock > Basalt
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale

Nearby scientific data

(1) -119.12565, 34.76971
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Extensive Folding And Faulting

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No
Discovery year 1898

Mining district

District name Ventura County Borate District

Comments on the production information

  • SEVERAL CARS OF COLEMANITE WERE REPORTEDLY SHIPPED FROM THIS POINT.

Reference information

Bibliographic references

  • Deposit

    GALE, H.S., 1912, BORATE DEPOSITS IN VENTURA COUNTY, CALIFORNIA: USGS BULL 540, P. 434-456.

  • Deposit

    USBLM, 1959, MINERAL RECORD CARD.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit SPATIAL ASSOCIATION OF BASALT WITH DEPOSITS.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1993 Orris, Greta J. 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

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.