Dexter Mine

Past Producer in Beaverhead county in Montana, United States with commodities Silver, Lead
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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Ownership information
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10019847
MRDS ID DC11704
Record type Site
Current site name Dexter Mine
Related records 10269856

Geographic coordinates

Geographic coordinates: -112.86478, 45.31546 (WGS84)
Elevation 2103
Relative position 2.5 AIR MILES NORTH OF ARGENTA

Site location context

Political divisions (FIPS codes)

Beaverhead(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Argenta(quadrangle 1:24,000 scale)

Dillon(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Beaverhead(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)

Geographic areas

Country State County
United States Montana Beaverhead

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 006S 010W 15,17 NW OF NW (17) Montana

Commodities

Commodity Importance
Silver Primary
Lead Primary

Materials information

Materials Type of material
Galena Ore
Tetrahedrite Ore
Calcite Gangue
Garnet Gangue
Pyrite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Lcret-Tert Quartz Monzonite
    Rock description Lcret-Tert Quartz Monzonite
    Stratigraphic age (youngest) Late Devonian
    Stratigraphic age (youngest) Paleocene
  • Host or associated Host
    Rock type Sedimentary Rock > Clastic Sedimentary Rock > Shale
    Rock unit name Three Forks;Lodgepole
    Rock description Three Forks;Lodgepole

Nearby scientific data

(1) -112.86478, 45.31546

Economic information

Geologic structures

Type of structure Local
Structure description Breccia Zone, Faults, Quartz Monzonite Stock

Ore body information

  • Width 0.61M

Controls for ore emplacement

  • Fissure Zone, Contact Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name Argenta District

Land status

Ownership category BLM Administrative Area

Ownership information

  • Type Operator
    Owner Continental Divide Mines Co.
    First year 1931
  • Type Owner
    Owner Henry Meine
    Home office Dillon
    First year 1958

Comments on the production information

  • PRODUCTION YEARS INCLUDE 1880'S, 1925, 1932 AND 1936, BUT FIGURES ARE CONFIDENTIAL.

Workings at the site

  • Type of workings Underground
    Overall depth 96.62M

Comments on the workings information

  • SEVERAL SHAFTS, INCLUDING ONE TO 317 FEET, WITH A CONNETING, 260-FT ADIT.

Reference information

Bibliographic references

  • Deposit

    MBMG BULL 6, P. 74.

  • Deposit

    MBMG BULL 85, P. 47.

  • Deposit

    USGS OFR 79-1426, P. 22.

  • Deposit

    MEYERS, W.B., 1952, GEOL. MAP OF NW 1/4 OF WILLIS QUAD., BEAVERHEAD CO., MT: U.S.G.S. OPEN FILE REPORT.

  • Deposit

    1931 RECON M.B.M.G. BULL. 6

  • Deposit

    1952 GEOLMAP MEYERS, W.B., U.S.G.S. NW WILLIS QUAD

  • Deposit

    1979 RECON BERGER, B.R., U.S.G.S. OPEN FILE 79-1426

General comments

Subject category Comment text
Deposit VEINS IN SHALE NOT FAR FROM INTRUSIVE CONTACT.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1974 Unknown U.S. Geological Survey
Updater 01-JUL-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