Cruse Mine

Past Producer in Lewis and Clark county in Montana, United States with commodities Gold, Silver, Lead, Copper, Zinc
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. Mineral occurrence model information
  10. Host and associated rocks
  11. Nearby scientific data
  12. Geologic structures
  13. Ore body information
  14. Controls for ore emplacement
  15. Economic information about the deposit and operations
  16. Mining district
  17. Production statistics
  18. Reserves and resources
  19. Workings at the site
  20. Links to other databases
  21. Bibliographic references
  22. General comments
  23. Reporter information

Geologic information

Identification information

Deposit ID 10015895
MRDS ID DB02176
Record type Site
Current site name Cruse Mine
Alternate or previous names Bald Mountain Mine

Geographic coordinates

Geographic coordinates: -112.32145, 46.74879 (WGS84)
Relative position 1.5 KM WSW OF MARYSVILLE.

Site location context

Political divisions (FIPS codes)

Lewis and Clark(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Greenhorn Mountain(quadrangle 1:24,000 scale)

Elliston(quadrangle 1:100,000 scale)

Butte(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Missouri(hydrologic unit)

Upper Missouri(hydrologic accounting unit)

Missouri-Marias(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Lewis and Clark

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 012N 006W 35 Montana

Comments on the location information

  • 0.9 KM E OF MT BELMONT.

Commodities

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

Materials information

Materials Type of material
Gold Ore
Quartz Gangue

Alteration

  • (Local) Oxidation And Leaching

Mineral occurrence model information

Model code 85
USGS model code 22c
Deposit model name Polymetallic veins
Mark3 model number 46

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock type qualifier QUARTZ DIORITE, HORNSTONE
    Rock unit name Belt Series
    Rock description Belt Series
  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock type qualifier QUARTZ DIORITE
    Rock unit name Marysville Stock
    Rock description Marysville Stock
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Late Cretaceous
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Late Cretaceous

Nearby scientific data

(1) -112.32145, 46.74879

Economic information

Geologic structures

Type of structure Regional
Structure description Boulder Batholith
Type of structure Local
Structure description Marysville Stock

Ore body information

  • Strike EAST-WEST
    Dip 70S
    Length 152.4M
    Width 9.14M

Controls for ore emplacement

  • Intrusive Contact Zone

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant Yes

Mining district

District name Marysville District

Production statistics

  • Year 1948
    Period 1909-1948
    Material ore
    Ore mined 140000mt
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Minor CU Copper Copper 39537.37mt
    Minor ZN Zinc Zinc 16538.88mt
    Minor PB Lead Lead 566159.48mt
    Major AG Silver Silver 2515805.06g
    Major AU Gold Gold 979573.03g

Comments on the production information

  • RICH PRODUCER (1911)

Reserves and resources

  • Type In-situ
    Estimate year 1990
    Total resources 635000mt ore

Workings at the site

  • Type of workings Underground
    Length 304.8M
    Overall depth 152.4M

Comments on the workings information

  • 20 STAMP MILL ON PROPERTY IN 1911 . 3 TUNNELS, TUNNEL NO 1 IS THE WORKING ADIT AND IT IS IN THE QUARTZ DIORITE, THE 2ND AND 3RD TUNNELS ARE IN THE HORNSTONE.

Comments on development

  • 70% OF THE AU AND AG RECOVERED AT THE MILL, THE TAILINGS WENT TO A CYANIDE PLANT.

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit Merged data from Deposit ID's: 10245403 (Cruse Mine)

10221489 (Belmont Mine)

10124475 (Bald Mountain Mine)

Deposit VEIN FORKS AND NARROWS UPON ENTERING HORNSTONE. ORE VALUE DECREASES WITH DEPTH

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1979 Elliott, James E. U.S. Geological Survey
Updater 01-DEC-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.