| Basis for focus area |
Outline of Coal Cliffs district from Krahulec (2018b). |
| Identified resources |
None. |
| Production |
None. |
| Status |
Past exploration. |
| Estimated resources |
Unknown. |
| Geologic maps |
Hintze (1980), scale 1:500,000. |
| Geophysical data |
Inadequate Rank 4 and 5 aeromagnetic coverage; Rank 5 aeroradiometric coverage. |
| Favorable rocks and structures |
The deposits are hosted in the basal Ferron Sandstone Member of the Upper Cretaceous Mancos Shale. Seven small, flat lying, beach paleoplacer deposits occur on two parallel northwest-trending belts. The mineralogy is believed to be ilmenite, zircon, magnetite, quartz, and monazite. |
| Deposits |
Bradley. |
| Evidence from mineral occurrences |
UMOS (Utah Geological Survey, 2021). |
| Geochemical evidence |
Three samples from the exposed paleoplacer deposits average 12.6% TiO2, 1.8% ZrO2, 33.4% Fe, and 0.1% ThO2 (Dow and Batty, 1961). |
| Geophysical evidence |
None. |
| Evidence from other sources |
Krahulec (2018b), Mills and Rupke (2020). |
| Cover thickness and description |
Exposed. |
| Authors |
Stephanie Mills. |
| New data needs |
None requested at this time. |
| Geologic mapping and modeling needs |
None requested at this time. |
| Geophysical survey and modeling needs |
None requested at this time. |
| Digital elevation data needs |
Lidar in progress. |
