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  3. Mineral Resource Data System (MRDS)

Big Mine

Occurrence in Pinal county in Arizona, United States with commodities Barium-Barite, Copper, Lead, Silver
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10039657
MRDS ID M050594
Record type Site
Current site name Big Mine

Geographic coordinates

Geographic coordinates: -111.06875, 32.6251 (WGS84)
Relative position ABOUT 10 MILES N AND W OF ORACLE JUNCTION, AND ABOUT 35 MILES SE OF FLORENCE.

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Chief Butte(quadrangle 1:24,000 scale)

Casa Grande(quadrangle 1:100,000 scale)

Tucson(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Lower Santa Cruz(hydrologic unit)

Santa Cruz(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 009S 012E 26 Arizona

Comments on the location information

  • INFO FROM LAND.ST :(1965)

Commodities

Commodity Importance
Barium-Barite Critical Primary
Copper Primary
Lead Secondary
Silver Secondary

Materials information

Materials Type of material
Barite Ore
Chrysocolla Ore
Galena Ore
Malachite Ore
Illite Gangue
Quartz Gangue

Alteration

  • (Local) Propylitic Alteration, Sericitic, Veins Oxidized, Illite

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic)
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Pinal Schist
    Rock description Pinal Schist

Nearby scientific data

(1) -111.06875, 32.6251
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Fault Trending N35w, Dip 65s

Ore body information

  • Strike N30-60W
    Dip 45-80 SW
    Length 2133.6M
    Width 152.4M

Comments on the geologic information

  • VEINS ARE CROSS CUT BY FAULTS.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Both
Deposit size Small
Significant No

Mining district

District name Owl Head District

Land status

Ownership category Private

Comments on the production information

  • NO PRODUCTION DATA AVAILABLE. A LIKELY PRODUCER.

Workings at the site

  • Type of workings Surface/Underground
    Overall depth 205.74M

Comments on the workings information

  • MAJOR SHAFT DEEPER THAN 675 FT, MINOR SHAFT APPROX. 610 FT; ADIT WITH RAISES TO THE SURFACE; 10-15 PROSPECT PITS.

Reference information

Bibliographic references

  • Deposit

    BARTER, C.F., 1962, GEOLOGY OF OWL HEAD MINING DISTRICT: UA MS THESIS.

  • Deposit

    BANKS, N.G., FIELD EXAM, 1976.

  • Deposit

    MOORE, R.T., AND VARGA, R.J., 1976, MAPS SHOWING NONMETALLIC MINERAL DEPOSITS IN THE PHOENIX AREA, ARIZONA: U.S. GEOLOGICAL SURVEY MISCELLANEOUS INVESTIGATIONS MAP I-845-J, SCALE 1:250,000.

  • Other Database

    CIMRI

General comments

Subject category Comment text
Deposit 1 TO 2 CM VEINS DISTRIBUTED SPARSELY OVER 500 FOOT WIDTH. GOSSAN SEEN ON THE OUTCROP. ONE PROSPECT PIT SALTED WITH LARAMIDE PORPHYRY. MINERALIZATION IS LARGELY BARITE ALONG A FAULT WITH SOME COPPER OXIDE AND OCCASIONAL GALENA.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1981 Harner, Joy L. (Peterson, Jo) U.S. Geological Survey
Updater 01-DEC-1992 Orris, Greta J. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

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.