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Great Eastern Mine

Producer in Pinal county in Arizona, United States with commodities Silver, Lead
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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. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Workings at the site
  16. Links to other databases
  17. Bibliographic references
  18. General comments
  19. Reporter information

Geologic information

Identification information

Deposit ID 10046280
MRDS ID M241173
Record type Site
Current site name Great Eastern Mine
Related records 10283729

Geographic coordinates

Geographic coordinates: -112.13822, 32.59149 (WGS84)
Elevation 777
Relative position ABOUT 4.5 MILES NORTHEAST OF CATHEDRAL ROCK

Site location context

Political divisions (FIPS codes)

Pinal(county)

Arizona(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Copperosity Hills(quadrangle 1:24,000 scale)

Gila Bend(quadrangle 1:100,000 scale)

Ajo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Santa Rosa Wash(hydrologic unit)

Santa Cruz(hydrologic accounting unit)

Middle Gila(hydrologic subregion)

Lower Colorado(hydrologic region)

Federal lands

BIA(Federal land areas administered by BIA)

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 002E 35 SW OF SW Arizona

Comments on the location information

  • SOUTH EAST OF THE VEKOL MINE; PRINCIPLE WORKINGS ARE ON THE NORTH SIDE OF A WESTWARD FLOWING ARROYA

Commodities

Commodity Importance
Silver Primary
Lead Primary

Materials information

Materials Type of material
Quartz Gangue

Alteration

  • (Local) Strong Oxidation

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Pennsylvanian
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Limestone
    Rock unit name Escabrosa Limestone;Naco Limestone
    Rock description Escabrosa Limestone;Naco Limestone

Economic information

Geologic structures

Type of structure Regional
Structure description E-W Trending Faults, Diorite Porphyry Dike, Beds Dip Westerly

Ore body information

  • Strike E-W
    Dip VERTICAL
    Thickness 1.52M
    Length 152.4M

Controls for ore emplacement

  • E-W Trending Faults

Comments on the geologic information

  • SIMILAR DEPOSIT TYPE AND GEOLOGIC SETTING AS VEKOL MINE

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1885
Year of first production 1885
Year of last production 1932

Comments on the production information

  • PRODUCTION FOR THE GREAT BEASTERN MAY HAVE BEEN INCLUDED IN THE FIGURES FOR THE VEKOL MINE

Workings at the site

  • Type of workings Surface/Underground
    Length 304.8M
    Overall depth 60.96M

Comments on the workings information

  • PRINCIPLE WORKINGS CONSIST OF OPEN CUTS, DRIFTS AND SMALL STOPES; THERE WERE ALSO TWO SHORT TUNNELS AND A SHAFT OF 200 FT.

Reference information

Bibliographic references

  • Deposit

    ABGMT CLIPPINGS FILES

  • Deposit

    ADMR FILE DATA

  • Deposit

    TENNEY, JAMES, HISTORY OF MINING IN ARIZONA, 1927-1929 P 335

  • Deposit

    TENNEY, J. B., ECONOMIC GEOLOGICAL RECONNAISSANCE OF CASA GRANDE MINING DISTRICT, AZ BUREAU OF MINES, 1934 P 8-9

  • Deposit

    USGS MF-931

General comments

Subject category Comment text
Deposit Discovery Year: 1880'S
Deposit REPLACEMENT ALONG FAULTS IN LIMESTONE BED WHICH DIPS TO WEST

Reporter information

Type Date Name Affiliation Comment
Reporter 01-APR-1982 Roth, Frances A. (Gest, Don E.) Arizona Bureau of Geology and Mineral Technology

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.