Hydrated normal vanadate, carnotite group
Specific gravity: 4.70
Colour: Bright yellow, yellow, greenish yellow
Solubility: Readily soluble in acids
Carnotite is a secondary
resulting from the alteration of
uraninite, montroseite or
davidite. It occurs in paleochannels in
sandstone in Colorado Plateau-type
deposits, found near fossil
carbonaceous matter, and in calcretes and near playas
Associated minerals include tyuyamunite, metatyuyamunite, volborthite, tangeite, metatorbernite, pintadoite, rauvite, rossite, uvanite, vanoxite, hewettite, gypsum and baryte (Mindat, HOM).
At the type locality, the Rajah Mine, Uravan Mining District, Montrose county, Colorado, USA, carnotite occurs in a Colorado Plateau type sedimentary vanadium-uranium deposit (Mindat).
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