Ajax Mine Group

Producer in Pima county in Arizona, United States with commodities Gold, Silver, Lead, Copper, Zinc

Geologic information

Identification information

Deposit ID 10039619
MRDS ID M050509
Record type Site
Current site name Ajax Mine Group
Related records 10259099

Geographic coordinates

Geographic coordinates: -111.33847, 31.54124 (WGS84)
Elevation 1173
Relative position 2.25 MILES S OF ARIVACA.
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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 022S 010E 05 CENTER OF E OF SE4 Arizona

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Primary
Copper Secondary
Zinc Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Pyrite Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock

Nearby scientific data

(1) -111.33847, 31.54124

Ore body information

  • General form IRREGULAR LENSING
    Width 1.02M

Controls for ore emplacement

  • Main Vein Occupies A Contact Fissure Between Quartzite And Limestone

Economic information

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1927
Year of last production 1941

Mining district

District name Arivaca District

Land status

Ownership category National Forest
Area name Coronado National Forest

Ownership information

  • Type Operator
    Owner Evelyn Watkins
    Home office Tucson, Az.
    First year 1965

Production statistics

  • Year 1941
    Period 1927 - 1941
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^0.6 Oz Au/Ton, 15 Oz Ag/Ton, 0.7 % Cu, 4 % Pb
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Silver Silver 424g/mt
    Minor Ore Gold Gold 17g/mt
    Major Ore Copper Copper 1wt-pct
    Major Ore Lead Lead 4wt-pct

Comments on the production information

  • CONSIDERABLE ZINC NOT RECOVERED

Workings at the site

  • Type of workings Surface/Underground
    Length 167.64M
    Overall depth 51.82M
    Overall length 365.76M

Comments on the workings information

  • CROSS-CUT, WITH TUNNELS AND STOPES

Comments on development

  • 5 UNPATENTED CLAIMS

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS M050509
U.S. Bureau of Mines Minerals Availability System MAS 0040190089

Bibliographic references

  • Deposit

    KEITH, S.B., 1974, INDEX OF MINING PROPERTIES IN PIMA COUNTY, ARIZONA: ARIZONA BUREAU OF MINES BULLETIN 189, P. 103.

  • Deposit

    ARIZONA DEPT OF MINERAL RESOURCES FILE DATA.

  • Production

    ABM BULLETIN 189, P. 103.

General comments

Subject category Comment text
Deposit 4 VEINS, 8 TO 40 INCHES WIDE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1979 Johnson, Kris H. (Creasey, S.C.) U.S. Geological Survey
Updater 01-OCT-1981 Gest, Don E. Arizona Bureau of Geology and Mineral Technology