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Iron Mountain Mine

Past Producer in Custer county in Colorado, United States with commodities Iron, Silver, Copper, Molybdenum, REE
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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. 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. Land status
  18. Workings at the site
  19. Links to other databases
  20. Bibliographic references
  21. General comments
  22. Reporter information

Geologic information

Identification information

Deposit ID 10012295
MRDS ID D007848
Record type Site
Current site name Iron Mountain Mine
Alternate or previous names Iron Mine, Iron Hill Mine

Geographic coordinates

Point of reference Pit
Geographic coordinates: -105.37307, 38.11807 (WGS84)
Elevation 2792
Location accuracy 50(meters)
Relative position 2.1 MILES N 55 W OF ROSITA

Site location context

Political divisions (FIPS codes)

Custer(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rosita(quadrangle 1:24,000 scale)

Canon City(quadrangle 1:100,000 scale)

Pueblo(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Arkansas Headwaters(hydrologic unit)

Upper Arkansas(hydrologic accounting unit)

Upper Arkansas(hydrologic subregion)

Arkansas-White-Red(hydrologic region)

Geographic areas

Country State County
United States Colorado Custer

Public Land Survey System information

Meridian Township Range Section Fraction State
6th Principal 022S 071W 19 SE OF NW OF SW Colorado

Comments on the location information

  • SE SLOPE OF IRON MTN, ABOUT 2-1/4 MILES NW OF ROSITA, IN THE W/2 SEC. 19, T 22 S, R 71 W.; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Iron Primary
Silver Primary
Copper Tertiary
Molybdenum Tertiary
REE Critical Tertiary

Materials information

Materials Type of material
Sphalerite Ore
Apatite Ore
Brochantite Ore
Goethite Ore
Hematite Ore
Jarosite Ore
Magnetite Ore
Molybdenite Ore
Powellite Ore
Pyrite Ore
Siderite Ore
Tennantite Ore
Actinolite Gangue
Barite Gangue
Calcite Gangue
Chalcedony Gangue
Chlorite Gangue
Diopside Gangue
Phlogopite Gangue
Quartz Gangue
Ankerite Gangue

Alteration

  • (Local) Weak Argillization, Hydrothermal Alteration With Silicification

Mineral occurrence model information

Model code 79
USGS model code 21a
Deposit model name Porphyry Cu-Mo
Mark3 model number 2
Model code 82
USGS model code 22
Deposit model name Epithermal veins

Host and associated rocks

  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Trachyandesite
    Stratigraphic age (youngest) Oligocene
    Stratigraphic age (youngest) Oligocene
  • Host or associated Associated
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite
    Rock unit name Bunker Trachyandesite
    Rock description Bunker Trachyandesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Trachyandesite
  • Host or associated Host
    Rock type Volcanic Rock (Aphanitic) > Intermediate Volcanic Rock > Andesite

Nearby scientific data

Pit (1) -105.37307, 38.11807
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Rosita Volcanic Center, Wet Mtns
Type of structure Local
Structure description Several Small Faults, Ring Faults

Ore body information

  • General form DIKE
    Strike N 27 E
    Dip VERTICAL
    Length 182.88M
    Width 6.1M
    Depth to top 0.61M

Controls for ore emplacement

  • Fault, Volcanic Vent, Breccia Dike

Economic information about the deposit and operations

Operation type Surface-Underground
Development status Past Producer
Commodity type Metallic
Deposit size Small
Significant No
Discovery year 1879
Year of first production 1880
Year of last production 1889

Mining district

District name Rosita Hills District

Land status

Ownership category Private

Comments on the reserve resource information

  • A 1981 report suggested that low-grade, bulk-tonnage copper-molybdenum deposits may occur in this area. (Sunshine files)

Workings at the site

  • Type of workings Underground
    Length 76.2M
    Overall depth 33.53M

Comments on the workings information

  • SHAFTS AND TUNNELS OF UNKNOWN DIMENSIONS; TUNNEL, SHAFT, TEST PIT, SMALL TRENCH; TUNNEL AND SHAFT REPORTEDLY CONNECTED

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit PEBBLE DIKE MINERALIZED WITH DISSEMINATED PYRITE, OXIDIZED TO MAGNETITE NEAR SURFACE

Reporter information

Type Date Name Affiliation Comment
Reporter 01-JUN-81 Collins, Donna B. (King, Robert U.) Colorado Geological Survey
Updater 05-APR-06 Beach, Richard A. Colorado Geological Survey

Beyond USGS

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

Maps centered on this site

Authoritative Colorado resources

These are landing pages for further research — the state agencies don't currently expose per-mine deep links.