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Formula: (UO2)(CO3).2H2O
Hydrated carbonate
Crystal System: Orthorhombic
Specific gravity: 4.04 measured, 4.55 calculated
Hardness: 1 to 2
Streak: Yellow
Colour: Citron-yellow
Luminescence: Pale green to pale yellow fluorescence in short wave and long wave UV
RADIOACTIVE
Environments
Sedimentary environments
Hydrothermal environments
Joliotite occurs as crusts on limonite and
baryte at uranium deposits (Webmin).
Localities
At the type locality, Krunkelbach Valley Uranium deposit, Menzenschwand, St Blasien, Waldshut, Freiburg Region,
Baden-Württemberg, Germany, joliotite is a rare secondary
mineral in the oxidised portions of the deposit. Associated minerals include
billietite, rutherfordine,
studtite, baryte and
limonite
(HOM, Mindat).
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