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Formula: (Al,☐)(UO2)2F(PO4)2.20H2O
Hydrated phosphate, uranyl mineral
Crystal System: Orthorhombite
Specific gravity: 2.5 measured, 2.49 calculated
Hardness: 2 to 2½
Streak: Yellow-white
Colour: Yellow, light yellow-green, pale green
Luminescence: Fluoresces yellow-green
Solubility: Soluble in acids
RADIOACTIVE
Environments
Uranospathite is an uncommon secondary mineral occurring
in the oxidised zones of uranium-bearing hydrothermal deposits. It easily loses 10-12 H2O converting to
sabugalite. It is commonly associated with
bassetite
(Mindat, HOM).
Localities
The type locality is Wheal Basset, Basset Mines, Carnkie, Carn Brea, Cornwall, England, UK.
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