The Unnamed Thorium Prospects is a thorium mine located in Gunnison county, Colorado at an elevation of 9,072 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
Elevation: 9,072 Feet (2,765 Meters)
Commodity: Thorium
Lat, Long: 38.24861, -107.09083
Map: View on Google Maps
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Unnamed Thorium Prospects MRDS details
Site Name
Primary: Unnamed Thorium Prospects
Commodity
Primary: Thorium
Secondary: REE
Tertiary: Copper
Tertiary: Zinc
Tertiary: Lead
Tertiary: Niobium (Columbium)
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
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: Intrusive Carbonatite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cambrian
Name: Intrusive Carbonatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Thorite
Ore: Monazite
Gangue: Pyrochlore
Gangue: Sphalerite
Gangue: Siderite
Gangue: Parisite
Gangue: Fluorite
Gangue: Chalcopyrite
Gangue: Barite
Gangue: Pyrite
Gangue: Phlogopite
Gangue: Galena
Gangue: Apatite
Gangue: Biotite
Gangue: Bastnaesite
Gangue: Calcite
Comments
Comment (Deposit): CARBONATITE DIKES IN THIS AREA ARE ONE OF FOUR ENVIRONMENTS OF KNOWN TH OCCURRENCE IN THE POWDERHORN-IRON HILL AREA AND ARE RELATED TO EMPLACEMENT OF LATE PRECAMBRIAN OR CAMBRIAN CARBONATITE STOCK AT IRON HILL. MOST DIKES ARE DISTRIBUTED RADIALLY ABOUT STOCK ALTHOUGH SOME SHOW NW-SE TRENDS PARALLEL TO LONG DIMENSION OF ALKALIC COMPLEX. TRENDS ALSO SUGGEST CONTROL BY PREEXISTING FRACTURES IN COMPLEX. ALONG WEST MARGIN OF COMPLEX, APOPHYSES OF FINE- TO MEDIUM-GRAINED GRANITE INTRUDE CONCORDANTLY INTO DUBOIS FELSITE MASS CONTAINING LENSES AND LAYERS OF SCHIST AND AMPHIBOLITE WHOSE FOLIATION TRENDS GENERALLY N 30 TO 40 E. CARBONATITE DIKE TRENDING N 88 E AND DIPPING 25 SE CUTS BOTH DUBOIS GREENSTONE UNITS AND LIES IN RADIAL ORIENTATION WITH RESPECT TO STOCK.
Comment (Workings): FOUR SURFACE PROSPECT PITS
Comment (Geology): OTHER MINERALS LISTED ABOVE ARE GENERAL OCCURRENCES REPORTED FOR CARBONATITES IN AREA; ALL MAY NOT NECESSARILY OCCUR AT THIS SITE.
Comment (Location): ON TOP OF RIDGE NE OF SMITH GULCH 1.95 MILES SSE OF POWDERHORN AND 2.1 MILES WSW OF IRON HILL. ; INFO FROM LAND.ST :1976
Comment (Commodity): BASE METALS LISTED ABOVE ARE GENERAL OCCURRENCES REPORTED FOR CARBONATITES IN AREA; ALL MAY NOT NECESSARILY OCCUR AT THIS SITE.
References
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.
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): 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.
Colorado Mining Photos
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