Nellie-Mascot Group

Past Producer in Jefferson county in Montana, United States with commodities Gold, Silver, Lead
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. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  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 10010550
MRDS ID D004321
Record type Site
Current site name Nellie-Mascot Group

Geographic coordinates

Geographic coordinates: -112.3856, 45.95546 (WGS84)
Elevation 2195
Relative position 3 MI NNE OF HOMESTAKE

Site location context

Political divisions (FIPS codes)

Jefferson(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Homestake(quadrangle 1:24,000 scale)

Butte South(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Jefferson(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 002N 006W 05 Montana

Comments on the location information

  • SW/4 OF NW/4 OF SECT. 5

Commodities

Commodity Importance
Gold Primary
Silver Primary
Lead Primary

Comments on the commodity information

  • QUARTZ VEIN HIGH IN SILVER

Materials information

Materials Type of material
Silver Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
    Rock unit name Butte Quartz Monzonite
    Rock description Butte Quartz Monzonite
    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) -112.3856, 45.95546

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith

Controls for ore emplacement

  • Aplite Dike

Comments on the geologic information

  • QUARTZ VEIN CUTS AN APLITE FACIES OF THE BOULDER BATHOLITH.

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1911

Mining district

District name Homestake District

Land status

Ownership category National Forest

Ownership information

  • Type Operator
    Owner Brown, Bill, Homestake
  • Type Owner
    Owner Templeton, J.L.
    Home office Butte, Mt.

Comments on the production information

  • 8 PRODUCTION YEARS. MAIN PRODUCTION IN 1911-1916. OWNER REPORTS $15,000 PRODUCTION AS OF 1935.

Workings at the site

  • Type of workings Underground
    Length 1536.19M
    Overall depth 15.24M

Comments on the workings information

  • 2 50 FT SHAFTS AND 6 ADITS; 150, 100, 1000, 700, 300, AND 700 FT. 2000 FT OF DRIFTS, 400 FT OF CROSSCUTS AND 300 FT OF RAISES

Comments on development

  • GASOLINE-DRIVEN COMPRESSOR.

Reference information

Bibliographic references

  • Deposit

    GILBERT, F.C., 1935, DIRECTORY OF MINING PROPERTIES: MONTANA BUREAU OF MINES AND GEOLOGY MEMOIR 15, P. 30.

  • Deposit

    MBMG BULL 16.

  • Deposit

    1960 RECON MONT. BUREAU OF MINES AND GEOL. BULL. 1

  • Production

    MBMG BULLETIN 16.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-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.