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  3. Mineral Resource Data System (MRDS)

Cumberland Mine

Past Producer in Fergus county in Montana, United States with commodities Gold, Silver
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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. General comments
  21. Reporter information

Geologic information

Identification information

Deposit ID 10071314
MRDS ID W014641
Record type Site
Current site name Cumberland Mine
Related records 10123980

Geographic coordinates

Geographic coordinates: -109.20829, 47.18186 (WGS84)
Elevation 1518
Relative position ABOUT 1 MILE EAST OF MAIDEN, MONTANA

Site location context

Political divisions (FIPS codes)

Fergus(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Judith Peak(quadrangle 1:24,000 scale)

Lewistown(quadrangle 1:100,000 scale)

Lewistown(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Box Elder(hydrologic unit)

Musselshell(hydrologic accounting unit)

Missouri-Musselshell(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Fergus

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 016N 020E 05,04 Montana

Commodities

Commodity Importance
Gold Primary
Silver Primary

Materials information

Materials Type of material
Sylvanite Ore

Host and associated rocks

  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Syenite
    Rock unit name Madison Series, Massive Limestone
    Rock description Madison Series, Massive Limestone
    Stratigraphic age (youngest) Mississippian
    Stratigraphic age (youngest) Pliocene

Nearby scientific data

(1) -109.20829, 47.18186
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Judith Mts. - Domal Structures Intruded By Cret - Tert Lacoliths
Type of structure Local
Structure description Replacement Deposit Covered By Network Of Small Fractures; A Fault Terminates The Contact Vein

Ore body information

  • General form OVAL (REPLACEMENT)

Controls for ore emplacement

  • Ore Occurs Along Contact Of Limestone And Syenite Porphyry And In Porphyry Near The Contact

Comments on the geologic information

  • SPOTTED HORSE, MAGINNIS, AND CUMBERLAND ON GOLD HILL SYENITE PORPHYRY - MADISON LIMESTONE CONTACT

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1885

Mining district

District name Warm Springs District

Ownership information

  • Type Operator
    Owner Coolidge, Bryant, Wieglenda And Associates
  • Type Owner
    Owner Cumberland Mines Syndicate

Production statistics

  • Year 1918
    Period 1904 - 1918
    Material AG
    Accuracy Accurate
    Description Cp_Grade: ^0.32 Oz/St
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Trace Silver Silver 9g/mt
  • Year 1918
    Period 1904 - 1918
    Material AU
    Accuracy Accurate
    Description Cp_Grade: ^0.38 Oz/St
    Importance Item Commodity Group Amount recovered Grade Recovery percentage
    Major Gold Gold 11g/mt

Comments on the production information

  • PRODUCTION DATA PRIOR TO 1904 UNAVAILABLE.

Workings at the site

  • Type of workings Underground
    Overall depth 76.2M

Comments on the workings information

  • THE LARGE REPLACEMENT DEPOSIT WAS MAJOR SOURCE OF ORE MINED. WORKINGS ON THIS BODY INCLUDED A SHAFT, ADIT, AND SEVERAL LEVELS. A MILL & CYANIDE PLANT ALSO EXISTED BUT WERE DESTROYED BY FIRE IN 1948.

Reference information

Bibliographic references

  • Deposit

    ROBERTSON, A. F., 1950, MINES & MINERAL DEPOSITS - FERGUS COUNTY, U.S. BUREAU MINES INF. CIRC. 7544.

  • Deposit

    CORRY, A. V., 1933, SOME GOLD DEPOSITS - BROADWATER, BEAVERHEAD, PHILLIPS, AND FERGUS CO., MT BUREAU OF MINES & GEOLOGY MEMOIR 10.

  • Production

    ROBERTSON, 1950, U.S.B.M. INF. CIRC. 7544

General comments

Subject category Comment text
Deposit Discovery Year: 1880'S

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1976 Mlynarczyk, Meg S. U.S. Geological Survey

Beyond USGS

Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.

External references

Maps centered on this site