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  3. Mineral Resource Data System (MRDS)

Kelly Iron

Past Producer in Madison county in Montana, United States with commodity Iron
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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 10090103
MRDS ID W026552
Record type Site
Current site name Kelly Iron

Geographic coordinates

Geographic coordinates: -112.15919, 45.28796 (WGS84)
Elevation 2036
Relative position 3.5 MI S43W OF ALDER

Site location context

Political divisions (FIPS codes)

Madison(county)

Montana(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Laurin Canyon(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 006S 005W 25 CENTER OF N2 Montana

Comments on the location information

  • DEPOSIT ON RIDGELINE BETWEEN SOUTH FORK CANYON AND BEATCH CANYON

Commodities

Commodity Importance
Iron Primary

Comments on the commodity information

  • GRADE OF DEPOSIT RANGES BETWEEN 20 AND 35 PERCENT FE.

Materials information

Materials Type of material
Hematite Ore
Magnetite Ore
Garnet Gangue
Hornblende Gangue
Quartz Gangue

Alteration

  • (Local) Slight Kaolinitization

Analytical data

Result MN CONTENT IN 2 NARROW HORIZONS RUNS 1.2-10.2%

Host and associated rocks

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

Nearby scientific data

(1) -112.15919, 45.28796
ListMap

Economic information

Geologic structures

Type of structure Local
Structure description Overturned Limb Of Fold & Trough Of Syncline

Ore body information

  • General form TABULAR
    Strike N 80 E
    Dip 60 N
    Length 198.12M
    Width 91.44M
    Depth to top 0M
    Depth to bottom 152.4M

Controls for ore emplacement

  • Transgressing And Regressing Shoreline With Deposition Of Ferruginous Muds (Later Metamorphosed)

Comments on the geologic information

  • MOSTLY MAGNETITE

Economic information about the deposit and operations

Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1945

Mining district

District name Ruby Range

Land status

Ownership category Private

Ownership information

  • Type Operator
    Owner Finlen And Sheridan, Contractors
  • Type Owner
    Owner Morrison - Knudsen Const. Co.

Reserves and resources

  • Type In-situ
    Estimate year 1960
    Total resources 8163000mt ore
    Commodity Subtype Grade units Group Importance Year
    Iron Fe 34 wt-pct Iron Major 1960

Comments on the reserve resource information

  • THE DEPOSIT WAS SAMPLED AND DRILLED BY THE F & S CONSTRUCTION COMPANY PRIOR TO 1960

Comments on the workings information

  • SEVEN BULLDOZER CUTS AVERAGING ABOUT 350 FT IN LENGTH WERE EXCAVATED. THE CUTS RANGE IN DEPTH FROM 2 TO 20 FEET. TWO CORE DRILL HOLES TO DEPTHS OF 440 AND 700 FT.

Reference information

Bibliographic references

  • Deposit

    JAMES, H. L., AND WIER, K. L., 1972 , GEOLOGIC MAP OF THE KELLY IRON DEPOSIT SEC. 25 , T. 6 S., R. 5 W., MADISON COUNTY, MONTANA: USGS MAP MF 349.

  • Deposit

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

  • Deposit

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

  • Deposit

    1967 COMPILE CARR. GUILD, & WRIGHT PUBLISHED REPORT

  • Deposit

    1967 GEOLMAP H. L. JAMES, K. L. WEIR, OPEN FILE REPORT

General comments

Subject category Comment text
Deposit THE DEPOSIT IS ON PRIVATE GROUND (KELLY RANCH) AND IS REPORTED TO HAVE BEEN LEASED BY THE MORRISON - KNUDSEN CONST. COMPANY OF BOISE, IDAHO ; INFO.SRC : 1 PUB LIT

Reporter information

Type Date Name Affiliation Comment
Reporter 01-MAR-1977 Johns, Willis M.; R. B. Berg U.S. Geological Survey
Updater 01-JAN-1983 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.

Maps centered on this site