| Host rock: | Echo Park Alluvium |
| Host type: | Sandstone,Arkose |
| Associated rock: | Wall Mountain Tuff Was Probable Principal Source Of Uranium |
| Associated type: | Rhyolite |
| Structure: | Thirtynine Mile Volcanic Field, Echo Park Graben, Paleovalleys, Faults |
| Tectonic: | Central Cordillera (Southern Rocky Mountains) |
| Alteration processes: | Oxidation, Alteration Of Feldspar To Clay |