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  3. Mineral Resource Data System (MRDS)

Longwell Ranch Central, North and South Pits

Occurrence in Contra Costa county in California, United States with commodity Sand and Gravel, Construction
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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. Nearby scientific data
  9. Economic information about the deposit and operations
  10. Ownership information
  11. Links to other databases
  12. Bibliographic references
  13. General comments
  14. Reporter information

Geologic information

Identification information

Deposit ID 10029559
MRDS ID M007182
Record type Site
Current site name Longwell Ranch Central, North and South Pits

Geographic coordinates

Geographic coordinates: -121.68936, 37.86935 (WGS84)
Relative position W1/2, SE1/4 - ABOUT 4 MILES S. OF BRENTWOOD

Site location context

Political divisions (FIPS codes)

Contra Costa(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Byron Hot Springs(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)

Geographic areas

Country State County
United States California Contra Costa

Public Land Survey System information

Meridian Township Range Section Fraction State
Mount Diablo 01S 03E 06 California

Commodities

Commodity Importance
Sand and Gravel, Construction Primary

Materials information

Materials Type of material
Sand Ore

Nearby scientific data

(1) -121.68936, 37.86935
ListMap

Economic information

Economic information about the deposit and operations

Development status Occurrence
Commodity type Non-metallic
Significant No

Ownership information

  • Type Operator
    Owner Columbia Steel Co.
    First year 1920

Comments on the production information

  • SMALL QUANTITY OF FOUNDRY SAND PRODUCED PRIOR TO 1925. IDLE. COLUMBIA STEEL WORKED CENTRAL PIT FOR FOUNDRY SAND; SILICA CO. OF CALIF. WORKED NORTH PIT FOR GLASS AND FOUNDRY SAND 1934-38; SILICA CO. AND CONTRA COSTA CO. WORKED SOUTH PIT, THE FORMER 1938-42 AND THE LATTER INTERMITTENTLY AS SOURCE OF ROADBUILDING MATERIAL.

Comments on the workings information

  • PIT, UNDERGROUND METHODS.

Reference information

Bibliographic references

  • Deposit

    CALIF. JOUR. VOL. 47, NO. 4, OCT. 1951, PL. 42 & P. 608; V. 54, NO. 4, OCT. 1958, P. 581, PL.

General comments

Subject category Comment text
Deposit MINE SYMBOL IN SW1/4 (BYRON 1943)

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.