1. Mineral Resources
  2. Online Spatial Data
  3. Mineral Resource Data System (MRDS)

Last Chance Mine

Past Producer in Lewis and Clark county in Montana, United States with commodities Gold, Silver
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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. Ore body information
  12. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Land status
  16. Workings at the site
  17. Links to other databases
  18. Bibliographic references
  19. General comments
  20. Reporter information

Geologic information

Identification information

Deposit ID 10019722
MRDS ID DC11228
Record type Site
Current site name Last Chance Mine

Geographic coordinates

Geographic coordinates: -112.52507, 46.94101 (WGS84)
Relative position 2 KM NNW OF CRATER MT.

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Swede Gulch(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Blackfoot(hydrologic unit)

Pend Oreille(hydrologic accounting unit)

Kootenai-Pend Oreille-Spokane(hydrologic subregion)

Pacific Northwest(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 Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 014N 007W 29 Montana

Comments on the location information

  • NEAR HEAD OF SEVEN-UP PETE GULCH. ; INFO FROM LAND.ST :(1968)

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Gold Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation

Analytical data

Result $2-35 /TON AU (1900), POCKETS $52-614 /TON AU; SHIPPED TO SMELTER: 1-5.83 OZ/TON AU; 13-232 OZ/TON AG.

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Elkhorn Mountain Volcanics
    Rock description Elkhorn Mountain Volcanics
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

(1) -112.52507, 46.94101
ListMap

Economic information

Ore body information

  • Width 0.91M

Controls for ore emplacement

  • Shear Zone 1-3 Ft In Width

Economic information about the deposit and operations

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

Mining district

District name Seven-Up Pete District

Land status

Ownership category National Forest

Workings at the site

  • Type of workings Underground
    Length 914.4M

Comments on development

  • MILL WAS BUILT EARLY 1900'S.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit VEINS ARE IN A SHEARED ZONE.

Reporter information

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

External references

Maps centered on this site