1. Mineral Resources
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  3. Mineral Resource Data System (MRDS)

Unnamed Thorium Prospects

Occurrence in Gunnison county in Colorado, United States with commodities Thorium, Copper, Lead, Zinc, 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. Host and associated rocks
  9. Nearby scientific data
  10. Geologic structures
  11. Controls for ore emplacement
  12. Economic information about the deposit and operations
  13. Mining district
  14. Land status
  15. Links to other databases
  16. Bibliographic references
  17. General comments
  18. Reporter information

Geologic information

Identification information

Deposit ID 10087973
MRDS ID D011406
Record type Site
Current site name Unnamed Thorium Prospects

Geographic coordinates

Geographic coordinates: -107.09201, 38.24306 (WGS84)
Elevation 2701
Relative position 22.4 MILES S 24 W FROM GUNNISON

Site location context

Political divisions (FIPS codes)

Gunnison(county)

Colorado(state)

United States(country)

North America(continent)

Land(continent)

USGS map quadrangles

Rudolph Hill(quadrangle 1:24,000 scale)

Montrose(quadrangle 1:100,000 scale)

Montrose(quadrangle 1:250,000 scale)

Hydrologic units (watersheds)

Upper Gunnison(hydrologic unit)

Gunnison(hydrologic accounting unit)

Gunnison(hydrologic subregion)

Upper Colorado(hydrologic region)

Federal lands

Bureau of Land Management(Bureau of Land Management CO)

Bureau of Land Management CO BLM(Type of land area)

BLM(Federal land areas administered by BLM)

Geographic areas

Country State County
United States Colorado Gunnison

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 046N 002W 15 SW OF NW OF NW Colorado

Comments on the location information

  • ON EAST SIDE OF SMITH GULCH 2.3 MILES SSE OF POWDERHORN AND 2.2 MILES WSW OF IRON HILL. ; INFO FROM LAND.ST :1976

Commodities

Commodity Importance
Thorium Primary
Copper Tertiary
Lead Tertiary
Zinc Critical Tertiary
REE Critical Tertiary

Comments on the commodity information

  • BASE METALS AND RARE EARTHS LISTED ABOVE ARE GENERAL OCCURRENCES REPORTED FOR TH VEINS IN AREA; ALL MAY NOT NECESSARILY OCCUR AT THIS SITE.

Materials information

Materials Type of material
Thorite Ore
Barite Gangue
Chalcopyrite Gangue
Fluorite Gangue
Galena Gangue
Goethite Gangue
Hematite Gangue
Jasper Gangue
Magnetite Gangue
Pyrite Gangue
Quartz Gangue
Rutile Gangue
Specularite Gangue
Sphalerite Gangue

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Granitoid > Granite
    Rock unit name Fine-To Medium-Grained Granite;Thorium Vein
    Rock description Fine-To Medium-Grained Granite;Thorium Vein
    Stratigraphic age (youngest) Neoproterozoic
    Stratigraphic age (youngest) Neoproterozoic

Nearby scientific data

(1) -107.09201, 38.24306
ListMap

Economic information

Geologic structures

Type of structure Regional
Structure description Gunnison Uplift, San Juan Volcanic Field
Type of structure Local
Structure description Iron Hill Alkalic Complex, Cimarron Fault, Powderhorn Stock

Controls for ore emplacement

  • Ne-Trending Vein Generally Concordant To Felsite Foliation

Comments on the geologic information

  • OTHER MINERALS LISTED ABOVE ARE GENERAL OCCURRENCES REPORTED FOR TH VEINS IN AREA; ALL MAY NOT NECESSARILY OCCUR AT THIS SITE.

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No

Mining district

District name White Earth (Powderhorn) District

Land status

Ownership category BLM Administrative Area

Comments on the workings information

  • FOUR SURFACE PROSPECT PITS

Reference information

Bibliographic references

General comments

Subject category Comment text
Deposit THORIUM VEINS IN THIS AREA ARE ONE OF FOUR ENVIRONMENTS OF TH OCCURRENCE KNOWN IN THE POWDERHORN-IRON HILL AREA AND ARE PROBABLY RELATED TO EMPLACEMENT OF LATE PRECAMBRIAN SYENITES NORTH AND WEST OF IRON HILL AND OF YOUNGER LATE PRECAMBRIAN OR CAMBRIAN CARBONATITES AT IRON HILL. PINK TO RED ORTHOCLASE IS COMMON AS LARGE LATHS OR AS CLUSTERED SUBHEDRAL TO ANHEDRAL GRAINS. ADJACENT TO MOST VEINS, WALL ROCKS ARE PARTLY REPLACED BY ORTHOCLASE (FENITELIKE REPLACEMENT). VERY FINE-GRAINED THORITE IS INTERGROWN WITH FE OXIDES. SMALL PLUTON OF FINE- TO MEDIUM-GRAINED GRANITE HAS INTRUDED DUBOIS FELSITE ON WEST MARGIN OF IRON HILL COMPLEX. FELSITE UNIT CONTAINS LENTICULAR, CONCORDANT LAYERS OF DUBOIS HORNBLENDE SCHIST AND AMPHIBOLITE. TH VEIN IS GENERALLY CONCORDANT WITH FELSITE FOLIATION AND LIES ALONG STRIKE OF LAYER OF HORNBLENDE SCHIST AND AMPHIBOLITE, ALL TRENDING N 28 E, 45 SE.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-FEB-1984 Schwochow, Stephen D. 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.