| Deposit ID | 10014445 |
|---|---|
| MRDS ID | D011212 |
| Record type | Site |
| Current site name | Unnamed Thorium Prospect |
| Geographic coordinates: | -107.06423, 38.335 (WGS84) |
|---|---|
| Elevation | 2854 |
| Relative position | 16.1 MILES S 28 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)
| Country | State | County |
|---|---|---|
| United States | Colorado | Gunnison |
| Meridian | Township | Range | Section | Fraction | State |
|---|---|---|---|---|---|
| New Mexico | 047N | 002W | 11 | SW OF SW OF SE | 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;Granite Of Tolvar Peak | ||||
| Rock description | Trachyte And Trachyte Porphyry Dikes;Granite Of Tolvar Peak | ||||
| |||||
| Host or associated | Associated |
|---|---|
| Rock type | Plutonic Rock > Granitoid > Granite |
| Host or associated | Host |
|---|---|
| Rock type | Volcanic Rock (Aphanitic) > Felsic Volcanic Rock > Trachyte |
| Rock unit name | Dubois Greenstone--Hornblende Schist And Amphibolite |
| Rock description | Dubois Greenstone--Hornblende Schist And Amphibolite |
| (1) | Morrison Fm and Junction Creek Sandstone |
|---|
| 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 | D011212 |
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 OF TOLVAR PEAK GRANITE COUNTRY ROCK, INCLUDING ENCLOSED LAYER OF SCHIST/AMPHIBOLITE, TRENDS GENERALLY EAST-WEST TO ENE-WSW. THREE INTERSECTING TRACHYTE DIKES TREND N 5 E, N 70 E, AND N 75 W. |
| 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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