Longfellow Mine

Past Producer in Madison county in Montana, United States with commodities Gold, Silver, Lead, Copper, Arsenic
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. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  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 10019935
MRDS ID DC11976
Record type Site
Current site name Longfellow Mine

Geographic coordinates

Geographic coordinates: -112.50782, 45.60268 (WGS84)
Elevation 1847
Relative position 0.5 MILE SOUTH OF ROCHESTER

Site location context

Political divisions (FIPS codes)

Madison(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Nez Perce Hollow(quadrangle 1:24,000 scale)

Butte South(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Big Hole(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 Madison

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 003S 007W 06 Montana

Comments on the location information

  • NE 1/4, SE 1/4, SECTION 6.

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Primary
Copper Secondary
Arsenic Critical Tertiary

Materials information

Materials Type of material
Chalcopyrite Ore
Galena Ore
Quartz Gangue

Alteration

  • (Local) Brecciation, Oxidation

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Neoarchean
    Stratigraphic age (youngest) Neoarchean
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss
    Rock unit name Pre Belt
    Rock description Pre Belt

Nearby scientific data

(1) -112.50782, 45.60268

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Ore body information

  • Strike NORTH - SOUTH
    Dip 70 W

Controls for ore emplacement

  • Aplite

Comments on the geologic information

  • GEOL.DESC: LOW GRADE SULFIDE ORE

Economic information about the deposit and operations

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

Mining district

District name Rochester District

Land status

Ownership category Private

Workings at the site

  • Type of workings Underground
    Overall depth 91.44M

Comments on the workings information

  • INCLINED SHAFT

Reference information

Bibliographic references

  • Deposit

    USGS BULL 574, P. 131.

  • Deposit

    MBMG MEM 19, P. 43.

  • Deposit

    CONSV. DIV. COMP. DATE, 05-22-1963

  • Deposit

    1914 RECON WINCHELL, A.N., US GEOL SUR BULL 574

  • Deposit

    1950 GEOLMAP MBMG MEM. 19

General comments

Subject category Comment text
Deposit PROBABLE EXTENSION OF BADGER VEIN. ORE IS BRECCIATED, RECOMENTED, LOW-GRADE SULPHIDES IN QUARTZ VEINS.

Reporter information

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