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  3. Mineral Resource Data System (MRDS)

Unnamed Throium Prospect

Occurrence in Gunnison county in Colorado, United States with commodities Thorium, Copper, Lead, Zinc, REE
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Geologic information

Identification information

Deposit ID 10014567
MRDS ID D011393
Record type Site
Current site name Unnamed Throium Prospect

Geographic coordinates

Geographic coordinates: -107.08201, 38.2475 (WGS84)
Elevation 2804
Relative position 21.8 MILES S 23 W FROM GUNNISON
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Geographic areas

Country State County
United States Colorado Gunnison

Public Land Survey System information

Meridian Township Range Section Fraction State
New Mexico 046N 002W 10 SW OF SW OF SE Colorado

Comments on the location information

  • AT TOP OF RIDGE WEST OF CEBOLLA CREEK 2.15 MILES SE OF POWDERHORN AND 1.6 MILES WSW OF IRON HILL. ; INFO FROM LAND.ST :1976

Commodities

Commodity Importance
Thorium Primary
Copper Tertiary
Lead Tertiary
Zinc Tertiary
REE 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) -107.08201, 38.2475
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Geologic structures

Type Description Terms
Regional Gunnison Uplift, San Juan Volcanic Field
Local Iron Hill Alkalic Complex, Cimarron Fault, Powderhorn Stock

Controls for ore emplacement

  • Nw-Trending Vein Cutting Across 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

Economic information about the deposit and operations

Development status Occurrence
Commodity type Metallic
Deposit size Small
Significant No
Discovery method Ore-Mineral In Place

Mining district

District name White Earth (Powderhorn) District

Land status

Ownership category BLM Administrative Area

Comments on the workings information

  • ONE SURFACE PROSPECT PIT

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS D011393

Bibliographic references

  • Deposit

    OLSON, J.C., 1974, GEOLOGIC MAP OF THE RUDOLPH HILL QUADRANGLE, GUNNISON, HINSDALE, AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1177.

  • Deposit

    HEDLUND, D.C., AND OLSON, J.C., 1961, FOUR ENVIRONMENTS OF THORIUM-, NIOBIUM-, AND RARE-EARTH-BEARING MINERALS IN THE POWDERHORN DISTRICT OF SOUTHWESTERN COLORADO: USGS PROF. PAPER 424-B, P. B283-B286.

  • Deposit

    OLSON, J.C., AND HEDLUND, D.C., 1981, ALKALIC ROCKS AND RESOURCES OF THORIUM AND ASSOCIATED ELEMENTS IN THE POWDERHORN DISTRICT, GUNNISON COUNTY, COLORADO: USGS PROF. PAPER 1049-C.

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 EMPLACMENT OF LATE PRECAMBRIAN SYENITES NORTH AND WEST OF IRON HILL AND OF YOUNGER LATE PREGAMBRIAN OR CAMBRIAN CARBONATITES AT IRON HILL. PINK TO RED ORTHOCLASE IS COMMON AS LARGE LATHS OR AS CLUSTERED SUBHEDERAL 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. FOLIATION OF FELSITE AND TREND OF ENCLOSED SCHIST/AMPHIBOLITE LAYER ARE N 30 E. SMALL TH VEIN CUTS ACROSS TREND OF FOLIATION AND TRENDS N 80 W.

Reporter information

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