Maybell District
The Maybell district in Moffat County was discovered in 1954 by an airborne radiation survey. Uranium was present as meta autunite, uranophane, uraninite, and coffinite in tufaceous fluvial sandstones of the Miocene Browns Park Formation. Ore deposits are associated with faults, which are thought to have been pathways for reducing solutions from below. Ore was taken from numerous open-pit mines on both sides of US Highway 40 between the towns of Maybell and Lay from 1953–1964 and 1976–1981. Ores were treated in a local ore mill during the 1953–1964 period; during 1976–1981, ore was heap-leached, and the eluate trucked to Wyoming for uranium recovery. Total production of the district was 5.3 million pounds (2400 metric tons) of uranium oxide.
Read more about this topic: Uranium Mining In Colorado
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