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Star Group

Past Producer in Cascade county in Montana, United States with commodities Silver, Lead, Gold, Copper, 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. Controls for ore emplacement
  13. Economic information about the deposit and operations
  14. Mining district
  15. Ownership information
  16. Production statistics
  17. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10071378
MRDS ID W014723
Record type Site
Current site name Star Group
Alternate or previous names Evening Star, London, Morning Star
Related records 10220660

Geographic coordinates

Geographic coordinates: -110.74667, 46.94435 (WGS84)
Elevation 1704
Relative position ABOUT 1 MILE NW OF NEIHART, MONTANA

Site location context

Political divisions (FIPS codes)

Cascade(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Neihart(quadrangle 1:24,000 scale)

White Sulphur Springs(quadrangle 1:100,000 scale)

White Sulphur Springs(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Belt(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 Cascade

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 014N 008E 29,30 Montana

Comments on the location information

  • U.T.M. COORDINATES TAKEN ON LOWER STAR ADIT

Commodities

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

Materials information

Materials Type of material
Galena Ore
Pyrargyrite Ore
Silver Ore
Sphalerite Ore
Stephanite Ore
Quartz Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Pliocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Rhyolite
    Rock unit name Pre Beltian Gneisses & Schists;Pinto Diorite
    Rock description Pre Beltian Gneisses & Schists;Pinto Diorite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
  • Host or associated Host
    Rock type Metamorphic Rock > Gneiss

Nearby scientific data

(1) -110.74667, 46.94435
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Zone Of Igneous Intrusions Covering Over 800 Square Km.
Type of structure Local
Structure description The Vein Has Been Offset By Several Cross Faults & Some Strike Faults That Have Crushed The Ore

Ore body information

  • General form SHOOTS
    Strike N 30 E
    Dip STEEPLY NW

Controls for ore emplacement

  • Ore Deposition Concentrated In Nw Deflections Created By Local Faulting

Comments on the geologic information

  • PRECAMBRIAN CRYSTALLINE ROCKS ARE PRE-BELT

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Year of first production 1925

Mining district

District name Neihart District

Ownership information

  • Type Owner-Operator
    Owner Stark, Lewis B.
    Home office Box 64, Neihart, Mt 59465

Production statistics

  • Year 1948
    Period 1901 - 1948
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^Approx. 0.01 Oz/St
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 0g/mt
  • Year 1948
    Period 1901 - 1948
    Material PB
    Accuracy Accurate
    Description Cp_Grade: ^Approx. 2 %
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Lead Lead 2wt-pct
  • Year 1948
    Period 1901 - 1948
    Material AG
    Accuracy Accurate
    Description Cp_Grade: ^Approx. 4.5 Oz/St
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Silver Silver 127g/mt

Comments on the production information

  • PRODUCTION WAS FROM 55,228 ST SHIPPING ORE. FIGURES FROM BOTH LONDON & EVENING STAR PROPERTIES.

Workings at the site

  • Type of workings Underground
    Length 853.44M
    Overall depth 30.48M

Comments on the workings information

  • MINE DEVELOPMENT INCLUDED 3 ADITS, SEVERAL RAISES AND WINZES. THE STAR ADIT HAS BEEN MAIN HAULAGE & WORKING LEVEL. 1939 - 50 TON FLOTATION MILL BUILT - AS OF 1975 PROPERTY REPORTED TO HAVE 100 T/D MILL.

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-1976 Mlynarczyk, Meg S. 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