Orange Bauranoite , picture size: 6 mm Locality: Oktyabr'skoye Mo-U Deposit, Krasnokamensk, Chitinskaya Oblast', Transbaikalia, Siberia, Russia — Photo: Thomas Witzke · CC BY-SA 3.0 de
Bauranoite
Bauranoite is an IMA-recognized mineral species in the oxides & hydroxide class, with the chemical formula BaU₂O₇·4-5H₂O.
It is a member of the Wölsendorfite structural group.
Key properties: Mohs hardness 5; specific gravity 5.28–5.42; optically biaxial.
IMA symbol Bau, IMA status: approved, named in 1971.
Found in the oxidation zone of a U-Mo deposit, replacing "pitchblende" and replaced by uranophane.
It is found associated with Uraninite, uranophane, calciouranoite, metacalciouranoite, protasite,.
The name refers to BArium and URANium in the composition.
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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