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Dutro Mine

Past Producer in Lewis and Clark county in Montana, United States with commodities Gold, Bismuth, Tin
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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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  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 10015862
MRDS ID DB02125
Record type Site
Current site name Dutro Mine
Alternate or previous names Old Dominion

Geographic coordinates

Geographic coordinates: -112.16144, 46.5924 (WGS84)
Relative position 7 MILES WEST OF HELENA, 1 MILE NORTH OF RIMINI ROAD.

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Black Mountain(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Missouri(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 010N 004W 30 Montana

Commodities

Commodity Importance
Gold Primary
Bismuth Critical Tertiary
Tin Critical Tertiary

Materials information

Materials Type of material
Cassiterite Ore
Iron Gangue
Jasper Gangue
Opal Gangue
Quartz Gangue
Tremolite Gangue

Alteration

  • (Local) Oxidized

Analytical data

Result ASSAY $75/TON AU (KNOPF, 1933, U.S.G.S. BULL 527, P. 101-102)

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Boulder Batholith
    Rock description Boulder Batholith
    Stratigraphic age (youngest) Paleocene
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Sedimentary Rock > Carbonate > Dolomite

Nearby scientific data

(1) -112.16144, 46.5924
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith
Type of structure Local
Structure description Series Of Paleozoic Limestone And Dolomite Standing On Edge Trending North-South Near End Of An Intrusion Of Fine Grained Diorite Whose Long Axis Is 1/4 Mile, And Parallels Strike Of Paleozoic Rocks

Controls for ore emplacement

  • Near Diorite Intrusion

Comments on the geologic information

  • SPECKS OF FREE GOLD IN ORE OF JASPERY QUARTZ, SOMETIMES CHROME-YELLOW COLOR DUE TO OXIDATION OF BISMUTH SULFIDES

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1911

Mining district

District name Blue Cloud District

Workings at the site

  • Type of workings Underground
    Length 150M
    Overall depth 39.62M

Comments on the workings information

  • INCLINE

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit ORIGIONAL DEPOSIT CHARACTER OBSCURED BY OXIDIATION OF THE ORE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-DEC-1979 Elliott, James E. U.S. Geological Survey
Updater 01-DEC-1981 Wise, Kristine K. (Elliott, James E.) U.S. Geological Survey

Beyond USGS

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

Maps centered on this site