Volcanic debris in uraniferous sandstones and its possible bearing on the origin and precipitation of uranium

Mineral District, Uranium, Vanadium, Mineralization, Paleoenvironment, Sedimentary Petrology, Fossil Plant, Supergene Enrichment, Brushy Basin Mbr(Brushy Basin shale mbr) - Morrison Fm - Jurassic, Salt Wash Mbr(Salt Wash Sandstone Mbr), Chinle Fm - Triassic, Shinarump Mbr(Shinarump conglomerate),