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  3. Mineral Resource Data System (MRDS)

Niles Mine

Past Producer in Custer county in Colorado, United States with commodities Vermiculite, 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. Mineral occurrence model information
  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. Workings at the site
  18. Links to other databases
  19. Bibliographic references
  20. Reporter information

Geologic information

Identification information

Deposit ID 10013423
MRDS ID D009706
Record type Site
Current site name Niles Mine

Geographic coordinates

Geographic coordinates: -105.55475, 38.26001 (WGS84)
Elevation 2487
Relative position 3.2 MILES S 85 E OF HILLSIDE

Site location context

Political divisions (FIPS codes)

Custer(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Hillside(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 021S 073E 04 SW OF NW Colorado

Comments on the location information

  • IN GEM PARK ABOUT A MILE SOUTH OF GEM MOUNTAIN AND ABOUT A MILE SOUTHWEST OF DEMOCRATIC MOUNTAIN ; INFO FROM LAND.ST :(1976)

Commodities

Commodity Importance
Vermiculite Primary
REE Critical Tertiary

Materials information

Materials Type of material
Vermiculite Ore

Analytical data

Result 0.003% NB, 0.5% SR, 1.5% LA, 2% CE, 0.7% ND

Mineral occurrence model information

Model code 27
USGS model code 11
Deposit model name Alkaline complexes

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro
    Rock unit name Gabbro Of The Gem Park Complex;Dolomite-Barite-Monazite Carbonatite Dike Of The Gem Park Complex
    Rock description Gabbro Of The Gem Park Complex;Dolomite-Barite-Monazite Carbonatite Dike Of The Gem Park Complex
    Stratigraphic age (youngest) Late Cambrian
    Stratigraphic age (youngest) Late Cambrian
  • Host or associated Associated
    Rock type Sedimentary Rock > Carbonate > Dolomite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Gabbro

Nearby scientific data

(1) -105.55475, 38.26001
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Central Cordillera (Southern Rocky Mountains)
Type of structure Local
Structure description Gem Park Complex

Ore body information

  • General form PIPE

Controls for ore emplacement

  • Carbonatite Dikes

Economic information about the deposit and operations

Development status Past Producer
Commodity type Both
Deposit size Small
Significant No
Year of last production 1945

Mining district

District name Gem Park Area

Land status

Ownership category Private

Comments on the production information

  • COMBINED SHIPMENTS FROM NILES MINE AND VERMICULITE MINE PRIOR TO WORLD WAR II TOTALLED LESS THAN 3000 TONS VERMICULITE

Workings at the site

  • Type of workings Surface
    Area 0.526HA
    Length 152.4M
    Overall length 91.44M
    Overall width 60.96M

Comments on the workings information

  • "L" SHAPED PIT

Reference information

Bibliographic references

Reporter information

Type Date Name Affiliation Comment
Reporter 01-NOV-1982 Collins, Donna B. Colorado 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

Authoritative Colorado resources

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