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Formula: Ca2(UO2)(CO3)3.11H2O
Hydrated carbonate, uranyl mineral
Crystal System: Orthorhombic
Specific gravity: 2.41 measured, 2.41 calculated
Hardness: 2½ to 3
Colour: Apple-green, siskin-green, yellowish green
Luminescence: Green to blue-green fluorescence under long wave and short wave UV
Solubility: Soluble in sulphuric acid with effervescence
RADIOACTIVE
Environments
Liebigite is an uncommon secondary mineral typically
formed as an alteration product of uraninite in alkaline carbonate
solutions. Associated minerals include uraninite,
schrockingerite,
parauranophane,
tyuyamunite, autunite,
uranophane, bayleyite,
carnotite, gypsum and
calcite
(HOM).
Localities
At the type locality, Edirne, Edirne Province, Turkey, liebigite occurs as mammillary concretions
associated with pitchblende and
chalcopyrite
(Mindat)
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