Joliotite
Joliotite is an IMA-recognized mineral species in the carbonate class, with the chemical formula (UO₂)(CO₃)·2H₂O.
It crystallizes in the orthorhombic crystal system.
Key properties: Mohs hardness 1–2; specific gravity 4.04; Yellow streak; [Vitreous.] luster; optically biaxial.
IMA symbol Jol, IMA status: approved, named in 1974.
A rare secondary mineral found in the oxidized portions of a uranium deposit.
It is found associated with Billietite, rutherfordine, studtite, barite, “limonite”.
The mineral was named to honor the French physicist Jean Frédéric Joliot (1900–1958), Institute du Radium, University of Paris, Paris, France, an early worker on radioactivity.
Index entry. This entry combines official IMA/RRUFF species data with published physical-property data — a full written entry hasn’t been published yet.
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