Ajax Mine

Producer in Beaverhead county in Montana, United States with commodities Gold, Silver, Lead, Copper
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. Mining district
  16. Land status
  17. Ownership information
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10069767
MRDS ID W007443
Record type Site
Current site name Ajax Mine
Alternate or previous names Carrie Leonard
Related records 10196966

Geographic coordinates

Geographic coordinates: -113.7248, 45.3235 (WGS84)
Elevation 2743
Relative position NEAR AJAX & LENA LAKES AND ABOUT 22 SW OF WISDOM

Site location context

Political divisions (FIPS codes)

Beaverhead(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Homer Youngs Peak(quadrangle 1:24,000 scale)

Salmon(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Hole(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management MT)

Bureau of Land Management MT BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Beaverhead-Deerlodge 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 Montana Beaverhead

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 006S 017W 07 Montana

Comments on the location information

  • 1 MI SE OF AJAX PEAK. SOUTH END OF CIRQUE: BIG SWAMP CREEK

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Primary
Copper Secondary

Materials information

Materials Type of material
Chalcopyrite Ore
Gold Ore
Chrysocolla Gangue
Magnetite Gangue
Malachite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic
  • Host or associated Host
    Rock type Metamorphic Rock > Metasedimentary Rock > Quartzite
    Rock unit name Lemhi Quartzite
    Rock description Lemhi Quartzite

Nearby scientific data

(1) -113.7248, 45.3235

Economic information

Geologic structures

Type of structure Local
Structure description Miner Lake Fault, Freeman Dike Zone, Country Rock Trends N15e, 15se.

Ore body information

  • General form TABULAR
    Strike EAST - WEST
    Dip 55 S AVERAGE
    Width 3.05M

Controls for ore emplacement

  • Dike/Fault Zone

Comments on the geologic information

  • AJAX VEIN COMPLETELY REPLACES DIKE ROCK.

Economic information about the deposit and operations

Development status Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1874
Discoverer W. S. Burnett
Year of first production 1880

Mining district

District name Beaverhead Range

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Clayton Jenkins
  • Type Owner
    Owner Morse, H. E.

Comments on the production information

  • PRINCIPAL PRODUCTION OCCURRED IN 1902.

Workings at the site

  • Type of workings Underground
    Length 700M
    Overall depth 92M

Comments on the workings information

  • WORKINGS CONSIST OF FOUR ADITS; THREE UPPER ADITS DRIVEN ON VEIN AND A LOWER ADIT DRIVEN TO CROSSCUT VEIN AT DEPTH.

Comments on development

  • THREE PATENTED CLAIMS: AJAX, AJAX, EXTENSION, AND EDNA AND EDITH. A STAMP MILL WAS BUILT AT PROPERTY DURING 1890'S BUT WAS REPLACED IN 1903 BY A NEW MILL WHICH CLOSED IN 1905

Reference information

Bibliographic references

  • Deposit

    MBMG BULL 85.

  • Deposit

    NOYES, A. J., 1914, THE STORY OF AJAX - LIFE IN THE BIG HOLE BASIN: HELENA, MT., STATE PUBLICATION CO.

  • Deposit

    MACKENZIE, W.D., 1949 MS THESIS, UNIV OF ID.

  • Production

    M.B.M.G. BULL. 85

General comments

Subject category Comment text
Deposit QUARTZ VEIN IS EXPOSED FOR THOUSANDS OF FEET ALONG TTHE SOUTH CIRQUE WALL

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JAN-1975 Krohn, Douglas H. U.S. Geological Survey
Updater 01-APR-1980 Loen, Jeffrey S. (Pearson, Robert C.) U.S. Geological Survey

Beyond USGS

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

External references