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U.S. Gypsum Co.

Past Producer in Imperial county in California, United States with commodities Gypsum-Anhydrite, Mica, Iron, Manganese, Sodium
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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. Ore body information
  11. Economic information about the deposit and operations
  12. Mining district
  13. Land status
  14. Links to other databases
  15. Bibliographic references
  16. General comments
  17. Reporter information

Geologic information

Identification information

Deposit ID 10062702
MRDS ID TC36247
Record type Site
Current site name U.S. Gypsum Co.
Alternate or previous names California Gypsum Group, Imperial Gypsum and Oil Corporation, Fish Creek Mountains, Gillette, Pacific Portland Cement, Tracts 68, 69, 70, 78, Ward

Geographic coordinates

Geographic coordinates: -116.07555, 33.02006 (WGS84)
Location accuracy 1000(meters)
Relative position 8.5 MILES S 18 DEGREES EAST OF OCOTILLO WELLS., Est For Central Area

Site location context

Political divisions (FIPS codes)

Imperial(county)

California(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Borrego Mountain SE(quadrangle 1:24,000 scale)

Borrego Valley(quadrangle 1:100,000 scale)

Santa Ana(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Salton Sea(hydrologic accounting unit)

Southern Mojave-Salton Sea(hydrologic subregion)

California(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CA)

Bureau of Land Management CA BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States California Imperial

Public Land Survey System information

Meridian Township Range Section Fraction State
San Bernardino 13S 9E 19;20;28;29;30;32 California

Comments on the location information

  • 2.5 MILES NORTHEAST OF SPLIT MOUNTAIN.

Commodities

Commodity Importance
Gypsum-Anhydrite Primary
Mica Tertiary
Iron Tertiary
Manganese Critical Tertiary
Sodium Tertiary

Materials information

Materials Type of material
Gypsum Ore
Anhydrite Gangue
Biotite Gangue

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock
    Stratigraphic age (youngest) Miocene

Nearby scientific data

(1) -116.07555, 33.02006
ListMap

Economic information

Ore body information

  • General form BLANKET
    Strike N10-20W
    Dip 25-35SW
    Thickness 60.96M
    Length 4023.25M

Comments on the geologic information

  • PARTS OF CONFORMABLE SEQUENCE OF MIOCENE SPLIT MOUNTAIN FORMATION, FISH CREEK GYPSUM, PLIOCENE MARINE IMPERIAL FORMATION.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Large
Significant No
Discovery year 1922
Production years 1922-

Mining district

District name Fish Creek Mountains

Land status

Ownership category BLM Administrative Area
Area name Cdca 372

Comments on the production information

  • 1951 PLANT CAPACITY APPROXIMATELY 2500-3000 POUNDS (?)

Comments on the workings information

  • THREE OPEN PITS. 1) 1800 FT LONG; 500 FT WIDE; A50 FT DEEP. 2) 1900 FT LONG, 400 FT WIDE, 100 FT DEEP. 3) 2500 FT LONG, 800 FT WIDE, 200 FT DEEP.

Comments on development

  • DRILLED WITH ARMSTRONG CHURN DRILL, BLASTED VERY UNIFORM IN GRADE, QUARRIED. ; ECON.COM: ANALYSIS OF ORE: SULPHURIC ANHYDRITE (SO3) - 47.17%; LIME 32.75%; CRYSTALLIZED WATER 18.75%; SILICA 0.92%; IRON OXIDE (FE2O3) 0.14%; ALUMINA 21%, MAGNESIUM 0.08%.

Reference information

Comments on the other database information

  • TC36247 AND TC36253 ARE NOT DUPLICATES (TINA WELLS 1/94)

Bibliographic references

  • Deposit

    SAMPSON, R.J., AND TUCKER, W.B., 1942, MINERAL RESOURCES OF IMPERIAL COUNTY, CALIFORNIA DIVISION OF MINES BULLETIN , VOL. 38, H2.

  • Deposit

    MORTON, PAUL K., 1977, GEOLOGY AND MINERAL RESOURCES OF IMPERIAL COUNTY, CALIFORNIA, CALIFORNIA DIVISION OF MINES AND GEOLOGY, COUNTY REPORT NO. 7.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit FORM NORTHWEST LIMB OF A NORTHWEST-TRENDING SYNCLINE, AXIS OF WHICH LIES IN A BROAD VALLEY TO THE WEST. MINOR FOLDING.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-92 Gray, Floyd 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.