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Iron Mask Mine

Past Producer in Broadwater county in Montana, United States with commodities Silver, Copper, Gold, 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. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. Reporter information

Geologic information

Identification information

Deposit ID 10071358
MRDS ID W014698
Record type Site
Current site name Iron Mask Mine
Related records 10269302

Geographic coordinates

Geographic coordinates: -111.66558, 46.34212 (WGS84)
Elevation 1996
Relative position ABOUT 11 KM WEST OF TOWNSEND

Site location context

Political divisions (FIPS codes)

Broadwater(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Giant Hill(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 007N;007N 001W;001E 24;19,30 Montana

Comments on the location information

  • UTM LOCATION OF SHAFTS ON IRON MASK VEIN. CROSSCUT ADIT IN SECTION 30 IS LABELED IRON MASK MINE ON TOWNSEND QUADRANGLE.

Commodities

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

Comments on the commodity information

  • VEIN IS HIGHLY OXIDIZED THROUGHOUT THE ZONE OF EXISTING EXPLORATIONS.

Materials information

Materials Type of material
Galena Ore
Pyrite Ore
Sphalerite Ore
Tetrahedrite Ore

Analytical data

Result CHANNEL SAMPLES AVERAGE 0.04 TOZ/ST AU, 1.95 TOZ/ST AG, 0.2% ZN, 0.9% CU, 4.7% MN

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;Quartz Diorite Stocks
    Rock description Elkhorn Volcanics Andesite;Quartz Diorite Stocks
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) Andesite
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith, Lombard Overthrust
Type of structure Local
Structure description Large Northwest-Striking Fault About 15 Km Long Which Is About 1 Km North Of Adit

Ore body information

  • General form TABULAR
    Strike N 15 W
    Dip 75 - 85 NE
    Length 300M
    Width 2M
    Depth to top 0M

Controls for ore emplacement

  • Deposit Is In North-Trending Zone Of Stocks

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1905

Mining district

District name Indian Creek District

Ownership information

  • Type Operator
    Owner Kenneth Toney,
    Home office Townsend, Montana

Comments on the production information

  • PRODUCTION PREVIOUS TO 1901 NOT AVAILABLE. MOST PRODUCTION BETWEEN 1943 AND 1947

Workings at the site

  • Type of workings Underground
    Length 1500M
    Overall depth 200M

Comments on the workings information

  • MINE DEVELOPED THROUGH SEVERAL SHAFTS ON IRON MASK VEIN AND A 700 M CROSSCUT ADIT WHICH PENETRATES THE VEIN ABOUT 174 M BELOW THE OUTCROP. VEIN HAS BEEN DEVELOPED THROUGH THIS OPENING BY A SERIES OF RAISES AND STOPES ALONG A HORIZONTAL DISTANCE OF 183 M.

Reference information

Bibliographic references

  • Deposit

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

  • Deposit

    SCHELL, E. M., 1963, ORE DEPOSITS OF THE NORTHERN PART OF THE PARK (INDIAN CREEK) DISTRICT, BROADWATER CO., MONTANA: MONTANA BUREAU OF MINES AND GEOL. BULL. 35

  • Production

    REED (1951) 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