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Vosburg Mine

Past Producer in Broadwater county in Montana, United States with commodities Gold, Silver, Lead, Zinc, Manganese
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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. 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. Ownership information
  16. Links to other databases
  17. Bibliographic references
  18. Reporter information

Geologic information

Identification information

Deposit ID 10071331
MRDS ID W014662
Record type Site
Current site name Vosburg Mine
Alternate or previous names Vossburg
Related records 10293596

Geographic coordinates

Geographic coordinates: -111.72087, 46.39934 (WGS84)
Elevation 2158
Relative position ABOUT 16 KM NORTHWEST OF TOWNSEND

Site location context

Political divisions (FIPS codes)

Broadwater(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Winston(quadrangle 1:24,000 scale)

Townsend(quadrangle 1:100,000 scale)

White Sulphur Springs(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Missouri(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Helena-Lewis and Clark 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 Broadwater

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 008N;007N 001W;001W 34;03 Montana

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Secondary
Zinc Critical Secondary
Manganese Critical Secondary

Materials information

Materials Type of material
Limonite Ore
Pyrite Ore
Sphalerite Ore

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Elkhorn Volcanics, Andesite;Little Olga Stock, Granodiorite
    Rock description Elkhorn Volcanics, Andesite;Little Olga Stock, Granodiorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite

Nearby scientific data

(1) -111.72087, 46.39934
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith, Lombard Overthrust
Type of structure Local
Structure description Little Olga Stock

Ore body information

  • General form TABULAR
    Strike N 30 W
    Dip 33 - 53 SW
    Length 500M
    Width 2M
    Depth to top 0M

Controls for ore emplacement

  • Little Olga Stock; Deposit Is In North-Trending Zone Of Stocks

Comments on the geologic information

  • VOSBURG VEIN CONFINED TO LITTLE OLGA STOCK. SEVERAL OTHER APPROXIMATELY PARALLEL VEINS IN STOCK INCLUDING CYNOSURE, IRISH SYNDICATE, AND THE LITTLE OLGA. STOCK IS PORPHYRITIC NEAR VOSBURG MINE.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1933

Mining district

District name Winston District

Ownership information

  • Type Operator
    Owner Vosburg Mining Co., Winston, Montana
  • Type Owner
    Owner Vosburg Mining Co., Seattle, Washington

Comments on the production information

  • ESTIMATE BELIEVED TO BE VERY CLOSE TO ACTUAL PRODUCTION

Comments on the reserve resource information

  • ASSUME ADDITIONAL DEVELOPMENT FOR 100 FT BELOW EXISTING WORKINGS. GRADE IS GRADE OF 6 IN WIDTH OF VEIN ON THIRD LEVEL.

Comments on the workings information

  • MINE DEVELOPED BY A TWO COMPARTMENT SHAFT AND AT LEAST 7 ADITS ON THE EAST SIDE OF A HILL. VEIN APPEARS TO HAVE BEEN WORKED TO A DEPTH OF ABOUT 70 M

Reference information

Bibliographic references

  • Deposit

    EARLL, F. N., 1964, ECONOMIC GEOLOGY AND GEOCHEMICAL STUDY OF WINSTON MINING DISTRICT, BROADWATER CO., MONTANA: MONTANA BUREAU OF MINES GEOL. BULL. 41

  • Deposit

    REED, G. C., 1951, MINES AND MINERAL DEPOSITS (EXCEPT FUELS), BROADWATER CO., MONTANA: U.S. BUREAU MINES INF. CIRC. 7592

  • Production

    USBM IC 7592

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1976 Krohn, Douglas H. U.S. Geological Survey

Beyond USGS

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

External references

Maps centered on this site