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Lotta Tunnel

Past Producer in Jefferson county in Montana, United States with commodities Gold, Silver, Zinc
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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. Economic information about the deposit and operations
  13. Mining district
  14. Ownership information
  15. Production statistics
  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 10101738
MRDS ID D008091
Record type Site
Current site name Lotta Tunnel
Alternate or previous names Lotta Mine

Geographic coordinates

Geographic coordinates: -112.26616, 46.25657 (WGS84)
Relative position ABOUT 1.3 KM W OF BASIN

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Basin(quadrangle 1:24,000 scale)

Butte North(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Boulder(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Federal lands

Beaverhead-Deerlodge 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 Jefferson

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 006N 005W 18 SW OF SW Montana

Comments on the location information

  • N SIDE OF U.S. HIGHWAY 91.

Commodities

Commodity Importance
Gold Primary
Silver Secondary
Zinc Critical Secondary

Materials information

Materials Type of material
Gold Ore
Pyrite Gangue
Quartz Gangue

Analytical data

Result 1958 IN BOTTOM OF NE DRIFT 17 OZ/TON AU.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Butte Quartz Monzonite(Boulder Batholith)
    Rock description Butte Quartz Monzonite(Boulder Batholith)
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite

Nearby scientific data

(1) -112.26616, 46.25657
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Ore body information

  • Strike N45E
    Dip 35-45N

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1895

Mining district

District name Basin (Cataract, Comet) District

Ownership information

  • Type Operator
    Owner Louis Peura
    Home office 1124 6th Ave., Helena, Mt.

Production statistics

  • Year 1954
    Period 1953-1954
    Material ORE
    Accuracy Estimate
    Description Cp_Grade: ^0.5 Oz/Ton Au
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Ore Gold Gold 14g/mt

Comments on the production information

  • $75000 FREE MILLING AU, (1880'S)

Workings at the site

  • Type of workings Surface/Underground
    Length 236.22M

Comments on the workings information

  • ITS ORIGINAL LENGTH WAS 775 FT. IT WAS CAVED UNTIL 1953. IT WAS REOPENED AND 660 FT WAS CLEARED. SAME VEIN ORIGINALLY MINED FROM SURFACE BY SHORT DRIFTS,ADITS, AND STOPES, (1880).

Comments on development

  • STARTED AS A HAULAGE AND EXPLORATION ADIT TO CROSSCUT A SERIES OF NE TRENDING FAULT ZONE.

Reference information

Bibliographic references

  • Deposit

    USGS BULL 1151, P. 112, PL. 1

  • Deposit

    MBMG BULL 16, P. 34

  • Deposit

    MBMG BULL 10, P. 28

General comments

Subject category Comment text
Deposit 500 FT FROM PORTAL THERE IS A FAULT ZONE 3 TO 15 FT THICK. DRIFTS EXTEND ALONG THIS VEIN FOR 120 FT.

Reporter information

Type Date Name Affiliation Comment
Reporter 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.

Maps centered on this site