| Deposit ID | 10094687 |
|---|---|
| MRDS ID | D011233 |
| Record type | Site |
| Current site name | Unnamed Thorium Prospects |
| Geographic coordinates: | -107.10535, 38.29111 (WGS84) |
|---|---|
| Elevation | 2512 |
| Relative position | 19.7 MILES S 29 W FROM GUNNISON |
Political divisions (FIPS codes)
Gunnison(county)
Colorado(state)
United States(country)
North America(continent)
Land(continent)
USGS map quadrangles
Powderhorn(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)
| Country | State | County |
|---|---|---|
| United States | Colorado | Gunnison |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 047N | 002W | 33 | N2 OF N2 OF NE OF NW | Colorado |
| Commodity | Importance |
|---|---|
| Thorium | Primary |
| Materials | Type of material |
|---|---|
| Thorite | Ore |
| Hematite | Gangue |
| Orthoclase | Gangue |
| Host or associated | Associated | ||||||
|---|---|---|---|---|---|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte | ||||||
| Rock unit name | Trachyte And Trachyte Porphyry Dikes | ||||||
| Rock description | Trachyte And Trachyte Porphyry Dikes | ||||||
| |||||||
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte |
| Rock unit name | Dubois Greenstone--Felsite And Felsite Prophyry |
| Rock description | Dubois Greenstone--Felsite And Felsite Prophyry |
| (1) | Modern alluvium |
|---|
| Type of structure | Regional |
|---|---|
| Structure description | Gunnison Uplift, San Juan Volcanic Field |
| Type of structure | Local |
| Structure description | Gunnison Gold Belt, Iron Hill Alkalic Complex, Tolvar Peak Stock |
| General form | TABULAR |
|---|
| Development status | Occurrence |
|---|---|
| Commodity type | Metallic |
| Deposit size | Small |
| Significant | No |
| District name | Goose Creek District |
|---|
| Ownership category | BLM Administrative Area |
|---|
| Agency | Database name | Acronym | Record ID | Notes |
|---|---|---|---|---|
| USGS | Mineral Resources Data System | MRDS | D011233 |
HEDLUND, D.C., AND OLSON, J.C., 1975, GEOLOGIC MAP OF THE POWDERHORN QUADRANGLE, GUNNISON AND SAGUACHE COUNTIES, COLORADO: USGS MAP GQ-1178.
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.
| Subject category | Comment text |
|---|---|
| Deposit | TRACHYTE DIKES IN THIS AREA ARE ONE OF FOUR ENVIRONMENTS OF TH OCCURRENCE KNOWN IN 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. DIKES FOLLOW LOCAL JOINTING IN COUNTRY ROCK AND ARE COMPOSED OF LATH-SHAPED ORTHOCLASE PHENOCRYSTS IN TRACHYTIC, APHANITIC GROUNDMASS OF ORTHOCLASE MICROLITES. RADIOACTIVITY IS CONCENTRATED IN HEMATITE PSEUDOMORPHS AFTER PYRITE. FOLIATION IN FELSITE/FELSITE PORPHYRY COUNTRY ROCK TRENDS GENERALLY N 15 TO 30 W, 85 NE TO 85 SW. TWO SETS OF VERTICAL JOINTS TREND N 87 W AND N 35 TO 45 W. TRACHYTE DIKE TRENDS N 83 E. |
| Type | Date | Name | Affiliation | Comment |
|---|---|---|---|---|
| Reporter | 01-JAN-1984 | Schwochow, Stephen D. | Colorado Geological Survey |
Supplemental information added by qvyshift.com. Not part of the original USGS MRDS record.
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