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Copper Mtn Mine

Occurrence in Madison county in Montana, United States with commodities Iron, Copper
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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. Alteration
  9. Host and associated rocks
  10. Nearby scientific data
  11. Geologic structures
  12. Ore body information
  13. Controls for ore emplacement
  14. Economic information about the deposit and operations
  15. Mining district
  16. Land status
  17. Ownership information
  18. Reserves and resources
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10096466
MRDS ID W026548
Record type Site
Current site name Copper Mtn Mine
Alternate or previous names Dictator and Belle Union, Ramshorn Mine
Related records 10221534

Geographic coordinates

Geographic coordinates: -112.04392, 45.42684 (WGS84)
Elevation 2235
Relative position 7.8 MI S75E OF SHERIDAN

Site location context

Political divisions (FIPS codes)

Madison(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Copper Mountain(quadrangle 1:24,000 scale)

Dillon(quadrangle 1:100,000 scale)

Dillon(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Ruby(hydrologic unit)

Missouri Headwaters(hydrologic accounting unit)

Missouri Headwaters(hydrologic subregion)

Missouri(hydrologic region)

Geographic areas

Country State County
United States Montana Madison

Public Land Survey System information

Meridian Township Range Section Fraction State
Montana Principal 005S 004W 01 CENTER OF S2 Montana

Comments on the location information

  • INFO FROM LAND.ST :(1978)

Commodities

Commodity Importance
Iron Primary
Copper Primary

Comments on the commodity information

  • 25 TO 30 PERCENT FE

Materials information

Materials Type of material
Bornite Ore
Chalcocite Ore
Chrysocolla Ore
Copper Ore
Magnetite Ore
Malachite Ore
Garnet Gangue
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Minor Kaolinitization & Sericitization (?)

Host and associated rocks

  • Host or associated Host
    Rock type Sedimentary Rock > Chemical Sediment > Iron Formation
    Rock unit name Pre Belt
    Rock description Pre Belt
    Stratigraphic age (youngest) Neoarchean
    Stratigraphic age (youngest) Neoarchean

Nearby scientific data

(1) -112.04392, 45.42684
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Some Nw (?) Faults Displace Bed At North End Of Deposit

Ore body information

  • General form TABULAR
    Strike N 10 W
    Dip 60 E
    Length 1524M
    Width 45.72M
    Depth to top 0M
    Depth to bottom 91.44M

Controls for ore emplacement

  • Ore Bed Occurs On Moderate To Steep - Dipping Limb Of Fold, Qtzite Band On Hanging Wall Of Bed

Comments on the geologic information

  • MAGNETITE, HEMATITE, AND LIMONITE COMPRISE THE ESSENTIAL FE MINERALS IN THE DEPOSIT. THE IRON HORIZON IS ON A STEEPLY EAST - DIPPING LIMB OF A DEEP SYNFORM

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1925
Discoverer Joseph Pennington

Mining district

District name Sheridan (Ramshorn Creek) District

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner F. And S Construct. Co.
  • Type Owner
    Owner Morrison - Knudsen Construct

Reserves and resources

  • Type In-situ
    Estimate year 1960
    Total resources 13605000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 28 wt-pct Iron Major 1960

Comments on the reserve resource information

  • THE PROPERTY WAS MAPPED AND CORE DRILLED BY F & S CONSTRUCTION CO. (NOW DEFUNCT)

Comments on the workings information

  • OPEN PIT, 60 TO 100 X 100 X 10 FT, SEVERAL TRENCHES AND PITS, ONE 300 FT ADIT.

Comments on development

  • CU DISCOVERED IN 1920'S, FE IN 1957. LOCAL PROSPECT OR CLAIMED 50 ST CU ORE WERE SHIPPED IN WW2.

Reference information

Bibliographic references

  • Deposit

    CARR, M.S., GUILD, P.W., & WRIGHT, W.B., 1967 , IRON IN THE UNITED STATES: USGS M.R. 51 WITH SECTION ON PREC IRON FORMATIONS IN U. S. BY BAYLEY R. W. & JAMES, H. L.

  • Deposit

    BAYLEY, R. W., AND JAMES H. L., 1973 , PRECAMBRIAN IRON FORMATIONS OF THE U. S., ECON. GEOL. V. 68 , NO. 7

  • Deposit

    LEVANDOWSKI, D.W., 1956, GEOL OF SHERIDAN-ALDER AREAU OF MICH. PHD

  • Deposit

    JAMES, H.L., AND WEIN, K.L., 1961, IRON DEPOSITS NEAR COPPER MOUNTAIN, MADISON COUNTY, MONTANA: U.S. GEOLOGICAL SURVEY OPEN-FILE REPORT.

  • Deposit

    MONTANA BUREAU OF MINES AND GEOLOGY, 1969, SUMMARY OF INFORMATION ON IRON ORE, BITUMINOUS COAL, FLUORITE, AND CHROMITE: MONTANA BUREAU OF MINES AND GEOLOGY UNPUBLISHED SUMMARY.

  • Deposit

    1961 GEOLMAP H. L. JAMES & K. L. WEIR, GEOL. MAP (OPENFILE)

  • Deposit

    1967 COMPILE CARR GUILD & WRIGHT, PUBLISHED REPORT

  • Deposit

    1969 COMPILE MBMG, SUMMARY REPORT, UNPUBLISHED

General comments

Subject category Comment text
Deposit Discovery Year: 1920'S
Deposit CU DEPOSIT IS ALONG SCHIST/QUARTZITE CONTACT. FE DEPOSIT EXTENDS AT LEAST 1 MI.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAY-1977 Johns, Willis M.; R. B. Berg U.S. Geological Survey
Updater 01-AUG-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.

External references

Maps centered on this site