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  3. Mineral Resource Data System (MRDS)

Chicago Pit

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

Geologic information

Identification information

Deposit ID 10060368
MRDS ID TC10747
Record type Site
Current site name Chicago Pit
Alternate or previous names Old Cliff, Nord Sil-Flo Pit

Geographic coordinates

Geographic coordinates: -111.12514, 33.26342 (WGS84)
Relative position OPEN PIT IS 2 MILES SW OF SUPERIOR, AZ.

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Picketpost Mountain(quadrangle 1:24,000 scale)

Mesa(quadrangle 1:100,000 scale)

Mesa(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Middle Gila(hydrologic unit)

Middle Gila(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

Tonto 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 Arizona Pinal

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 002S 012E 16 Arizona

Commodities

Commodity Importance
Perlite Primary

Comments on the commodity information

  • PERLITE IS LIGHT GRAY TO MILKY WHITE. STRONGLY DEVELOPED SPHEROIDAL PERLITIC STRUCTURES, FROM A MILLIMETER TO SEVERAL TENS OF CENTIMETERS IN DIAMETER, ARE SUCCESSIVELY SUPERIMPOSED ON ONE ANOTHER. THE MAIN MASS OF PERLITE CONTAINS SEVERAL PERCENT WATER.

Host and associated rocks

  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Glassy Rock > Obsidian
    Stratigraphic age (youngest) Pliocene
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Arnett Rhyolite
    Rock description Arnett Rhyolite

Nearby scientific data

(1) -111.12514, 33.26342
ListMap

Economic information

Ore body information

  • Thickness 13.72M

Economic information about the deposit and operations

Development status Past Producer
Commodity type Non-metallic
Significant No

Mining district

District name Superior

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Nord Perlite Co.

Comments on development

  • ECON.COM: MAJOR MARKETS IN LOUISIANA, ILLINOIS, WYOMING, PENNSYLVANIA, TEXAS, AND INDIANA.

Reference information

Bibliographic references

  • Deposit

    PETERSON, D.W., 1966, THE GEOLOGY OF PICKETPOST MOUNTAIN, NORTHEAST PINAL COUNTY, ARIZONA: ARIZONA GEOLOGICAL SOCIETY DIGEST, V. 8, P. 159-176.

  • Deposit

    USGS, AZ BUREAU OF MINES, U.S. BUREAU OF RECLAMATION, 1969, MINERAL AND WATER RESOURCES OF ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 180, 638 P.

  • Deposit

    PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS, 2ND EDITION: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES, 185 P.

  • Deposit

    WILSON, E.D., AND ROSEVEARE, GEORGE, 1945, ARIZONA PERLITE: ARIZONA BUREAU OF MINES, UNIVERSITY OF ARIZONA, CIRCULAR 12, 10 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 THIS MINE WORKS THE SAME PERLITE DEPOSIT AS THE MARY ANN MINE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1990 Bolm, Karen S. U.S. Geological Survey
Updater 01-OCT-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.