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Pinal Mammoth Gypsum

Past Producer in Pinal county in Arizona, United States with commodity 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. Mineral occurrence model information
  8. Host and associated rocks
  9. Nearby scientific data
  10. Ore body information
  11. Economic information about the deposit and operations
  12. Ownership information
  13. Links to other databases
  14. Bibliographic references
  15. General comments
  16. Reporter information

Geologic information

Identification information

Deposit ID 10060186
MRDS ID TC10144
Record type Site
Current site name Pinal Mammoth Gypsum
Alternate or previous names Thunderbird Mine

Geographic coordinates

Geographic coordinates: -110.6729, 32.8251 (WGS84)
Location accuracy 1000(meters)
Relative position SOUTH OF ARIVAIPA CREEK.

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Lookout Mountain(quadrangle 1:24,000 scale)

Mammoth(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower San Pedro(hydrologic unit)

San Pedro-Willcox(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Geographic areas

Country State County
United States Arizona Pinal

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 007S 016E 13,14 Arizona

Commodities

Commodity Importance
Gypsum-Anhydrite Primary

Mineral occurrence model information

Model code 261
USGS model code 35b.4 (35b.9)
Deposit model name Lacustrine gypsum

Host and associated rocks

  • Host or associated Host
    Rock type Unconsolidated Deposit > Clay, Mud
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Unconsolidated Deposit > Silt
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Gila Conglomerate
    Rock description Gila Conglomerate

Nearby scientific data

(1) -110.6729, 32.8251
ListMap

Economic information

Ore body information

  • Thickness 4.57M

Comments on the geologic information

  • SHALE IS CALCAREOUS TO GYPSIFEROUS. LACUSTRINE BASIN OCCUPIES AT LEAST 18 SQ MILES, PRINCIPALLY ALONG THE EAST SIDE OF THE SAN PEDRO RIVER, AND DIPS ABOUT 3 DEGREES EAST. AN EXPLORATION HOLE DRILLED TO EVALUATE ONE OF THE DEPOSITS INTERSECTED A CONTINUOUS 300 FT THICKNESS OF INTERBEDDED CLAY AND GYPSUM, AND CORRELATION WITH OTHER DRILL HOLES SUGGESTS THAT THE SECTION OF CLAY AND GYPSUM MAY BE MORE THAN 595 FT THICK. ARAVAIPA CREEK BISECTS THE DEPOSIT. NORTH OF THE CREEK, MASSIVE GYPSUM WITH CLAY PARTINGS (30-50 FT THICK) IS BEING MINED BY NATIONAL GYPSUM CO. AND THE SUPERIOR COMPANIES.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Deposit size Large
Significant No

Ownership information

  • Type Operator
    Owner National Gypsum Co.

Comments on development

  • ECON.COM: GYPSUM USED FOR AGRICULTURAL PURPOSES IS BAGGED IN COOLIDGE, ARIZONA.

Reference information

Bibliographic references

  • Deposit

    PHILLIPS, K.A., 1987, INDUSTRIAL MINERALS OF ARIZONA: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES, 185 P.

  • Deposit

    ARIZONA GEOLOGICAL SOCIETY, 1986, FRONTIERS IN GEOLOGY AND ORE DEPOSITS OF ARIZONA AND THE SOUTHWEST, FIELD TRIP GUIDEBOOK #6, INDUSTRIAL MINERAL DEPOSITS OF ARIZONA: TUCSON, ARIZONA GEOLOGICAL SOCIETY, 60 P.

  • Deposit

    PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERALS CARD FILE.

  • Deposit

    EYDE, TED, WILKINSON, P.A.K., AND WEILAND, E.F., 1986, FIELD TRIP TO SELECTED INDUSTRIAL MINERAL DEPOSITS OF ARIZONA, IN BEATTY, BARBARA, AND WILKINSON, P.A.K., EDS., FRONTIERS IN GEOLOGY AND ORE DEPOSITS OF ARIZONA AND THE SOUTHWEST: ARIZONA GEOLOGICAL SOCIETY DIGEST, V. XVI, P. 312-318.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit IN THIS AREA, A ZONE AT LEAST 100 FT THICK CONTAINS THICK (1-8 FT), MASSIVE, WHITE TO GRAYSIH WHITE, GRANULAR TO MICROCRYSTALLINE, FLAT-LYING GYPSUM BEDS. THE GYPSUM BEDS ARE SEPARATED BY THIN LAYERS OF CALCAREOUS AND GYPSIFEROUS SHALE AND SILT. THE SURFICIAL DEPOSIT OF GYPSITE IS 7 TO OVER 15 FT THICK.
Deposit GYPSITE IS SCRAPED FROM THE SURFACE AND PUSHED INTO STOCKPILES WITH A DOZER. THE CRUDE GYPSITE IS THEN HAULED TO A SCREENING AND BAGGING FACILITY. ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-AUG-1989 Bolm, Karen S. U.S. Geological Survey
Updater 01-SEP-1992 Orris, Greta J. U.S. Geological Survey
Updater 19-SEP-1994 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 Arizona resources

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