“…The country from La Veta Pass, Huerfano County, northward to South Park (Gott, 1951) and eastward to Colorado Springs ) contains a number of small carnotite deposits in Pennsylvanian, Permian, and Jurassic sandstones, and further search may uncover larger and richer deposits. The Placerville district, San Miguel County, well known for its roscoelite ores in the Entrada sandstone (Fischer, Haff, and Rominger, 1947), also contains veins with uraniferous hydrocarbons and sulfides that cut the sedimentary rocks below the Entrada sandstone (Hess, 1913;Wilmarth, 1951). In the Skull Creek area, Moffat County, small cupriferous carnotite deposits occur in sandstones of Mesozoic age.…”