Unnamed Throium Prospect

The Unnamed Throium Prospect is a thorium mine located in Gunnison county, Colorado at an elevation of 9,199 feet.

About the MRDS Data:

All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.

Mine Info

Satelite View

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Site Name

Primary: Unnamed Throium Prospect

Commodity

Primary: Thorium
Tertiary: Zinc
Tertiary: Copper
Tertiary: Lead
Tertiary: REE

Location

State: Colorado
County: Gunnison
District: White Earth (Powderhorn) District

Land Status

Land ownership: BLM Administrative Area
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Deposit Type: Vein
Operation Type: Unknown
Discovery Method: Ore-Mineral In Place
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

General Physiographic Area: Rocky Mountain System
Physiographic Province: Southern Rocky Mountains

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Type: R
Description: Gunnison Uplift, San Juan Volcanic Field

Type: L
Description: Iron Hill Alkalic Complex, Cimarron Fault, Powderhorn Stock

Alterations

Not available

Rocks

Name: Granite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic

Name: Granite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic

Analytical Data

Not available

Materials

Ore: Thorite
Gangue: Sphalerite
Gangue: Fluorite
Gangue: Hematite
Gangue: Quartz
Gangue: Jasper
Gangue: Chalcopyrite
Gangue: Galena
Gangue: Rutile
Gangue: Pyrite
Gangue: Barite
Gangue: Goethite
Gangue: Specularite
Gangue: Magnetite

Comments

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

Comment (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.

Comment (Workings): ONE SURFACE PROSPECT PIT

Comment (Geology): OTHER MINERALS LISTED ABOVE ARE GENERAL OCCURRENCES REPORTED FOR TH VEINS IN AREA; ALL MAY NOT NECESSARILY OCCUR AT THIS SITE.

Comment (Location): 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

References

Reference (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.

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

Reference (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.

Colorado Mining Photos

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