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Antioch

Producer in Contra Costa county in California, United States with commodity Silica
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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. Links to other databases
  10. Bibliographic references
  11. Reporter information

Geologic information

Identification information

Deposit ID 10109196
MRDS ID M007150
Record type Site
Current site name Antioch
Related records 10114459

Geographic coordinates

Geographic coordinates: -121.85576, 37.95184 (WGS84)
Relative position S1/2SW1/4SE1/4, SW1/4SE1/4SE1/4, W1/2SE1/4SE1/4SE1/4 4, N1/2NE1/4 9, AND N1/2NW1/4 10.

Site location context

Political divisions (FIPS codes)

Contra Costa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Antioch South(quadrangle 1:24,000 scale)

Stockton(quadrangle 1:100,000 scale)

San Jose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

San Joaquin Delta(hydrologic unit)

San Joaquin(hydrologic accounting unit)

San Joaquin(hydrologic subregion)

California(hydrologic region)

Federal lands

LG(Federal land areas administered by LG)

Geographic areas

Country State County
United States California Contra Costa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 001N 001E 04,09,10 California

Commodities

Commodity Importance
Silica Primary

Nearby scientific data

(1) -121.85576, 37.95184
ListMap

Economic information

Comments on the geologic information

  • GEOL.DESC: FRIABLE, WHITE, IMPURE SILICA SANDSTONE BEDS STRIKE N70-80 DEG. W AND DIP 20-35 DEG. N. CHANNEL SAMPLES ANALYSED 85.8-89.6% SIO2, 4.4-6.9% AL2O3, AND 1.26-1.92% FE2O3. ABOUT 8,000,000 TONS AVAILABLE BASED ON 60-70% EXTRACTION; 838,000 TONS AVAILABLE TO OPEN-PITMINING IN BED AVERAGING 36'THICK WITH ABOUT 20' OF OVERBURDEN.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Significant No

Comments on the production information

  • 326,000 TONS OF SAND MINED BY ROOM-AND-PILLAR METHOD.

Comments on the workings information

  • PRELIMINARY TESTS INDICATE QUALITY IMPROVEMENT WITH TREATMENT.

Reference information

Bibliographic references

  • Deposit

    SOUTHERN PACIFIC CO., MINERALS FOR INDUSTRY, NORTHERN CALIFORNIA, V. 2, P. 71

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1972 Gere, W. 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.