Bi₄Se₃ a ikunolit-laitakarit z uranového ložiska Zálesí u Javorníku v Rychlebských horáchČlánek v PDF
Bi4Se3 and ikunolite-laitakarite from the uranium deposit Zálesí near Javorník in Rychlebské hory Mts.
Bi-Se-S minerals were found in the uranium vein-type deposit in the vicinity of Zálesí near Javorník in Czech Silesia, Bohemian Massif. Lathy and needle-like crystals up to 100 µm of Bi4Se3 are associated with c1austhalite. This phase is slightly nonstochiornetric with excess of cations (Bi3.94-4.08 Pb0.12-0.15Sn0.01)4.11-4.22 (Se2.83-2.93 S0.07-0.08Te0.01)3.00. Minerals of the laitakerite-ikunolite series represent continuous solid solution between both mermbers, although the chemical composition is more related to ikunolite. They associate with native bismuth and late Co, Ni and Fe arsenides and sulfarsenides.
Bohuslav Fojt, Radek Škoda, Department of Geological Sciences, Masaryk University. Kotlářská 2, 611 37 Brno, Czech Republic