Ajo Gunsight Mine

Past Producer in Pima county in Arizona, United States with commodities Gold, Silver, Copper, Molybdenum, Tungsten

Geologic information

Identification information

Deposit ID 10027143
MRDS ID M002267
Record type Site
Current site name Ajo Gunsight Mine
Related records 10210297

Geographic coordinates

Geographic coordinates: -112.65879, 32.13622 (WGS84)
Elevation 911
Relative position 21 MI SE OF AJO.
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Geographic areas

Country State County
United States Arizona Pima

Public Land Survey System information

Meridian Township Range Section Fraction State
Gila and Salt River 015S 004W 11 W OF CENTER Arizona

Comments on the location information

  • ON PAPAGO INDIAN RESERVATION

Commodities

Commodity Importance
Gold Primary
Silver Tertiary
Copper Tertiary
Molybdenum Tertiary
Tungsten Tertiary

Comments on the commodity information

  • UNSPECIFIED MO, W, AU, AG MINERALS-PROBABLY SCHEELITE AND POWELLIT E

Materials information

Materials Type of material
Gold Ore
Silver Ore
Calcite Gangue
Quartz Gangue

Alteration

  • (Local) Au & Ag Concentrated In Oxidized Zone

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Stratigraphic age (youngest) Pliocene
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Granite

Nearby scientific data

(1) -112.65879, 32.13622

Geologic structures

Type of structure Local
Structure description Fissure Zone

Ore body information

  • General form STRINGERS

Controls for ore emplacement

  • Stringers Along Fissure Zone

Comments on the geologic information

  • GRANITIC ROCKS ARE DECOMPOSED

Economic information

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1919
Year of last production 1922

Comments on the production information

  • ORIGINALLY PROSPECTED IN LATE 1880'S. PRODUCED A FEW TONS OF GOLD ORE IN EARLY 1920'S

Comments on the workings information

  • SHAFT WORKINGS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M002267

Bibliographic references

  • Deposit

    KEITH, 1974, ABM BULL 189, P.122

  • Deposit

    MINES HANDBOOK, 1920

  • Deposit

    ABM FILE DATA

  • Other Database

    CIMRI

  • Production

    KEITH, 1974

General comments

Subject category Comment text
Deposit THIS REPORT REPRESENTS A MERGER OF ORIGINAL RECORD M002267 WITH RECORD D000784 OF ELLIOT, J.E. AND JAN WILT IN MOLYBDENUM FILE; T.G. THEODORE, USGS, CONT ACT PERSON ; INFO.SRC : 1 PUB LIT; 2 UNPUB REPT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1983 Peterson, Jocelyn A. U.S. Geological Survey