Formula: (UO2)2V5+6O17.15H2O (?)
Streak: Light yellow
Colour: Brown-yellow; pale brown in transmitted light
Solubility: Insoluble in water. Soluble in ammonium carbonate solution.
Uvanite is a secondary mineral occurring in a Colorado Plateau-type
uranium deposit in asphaltic sandstone.
Associated minerals include carnotite, rauvite,
gypsum and opal-AN
At the type locality, Temple Mountain, San Rafael Mining District, Emery County, Utah, USA, uvanite occurs in asphaltic sandstone as crystalline coatings and also massive. Associated minerals include rauvite, opal-AN, metatorbernite, hewettite, gypsum and carnotite (Mindat).
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