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Figure 11
Phase stability of aleksite series phases evaluated from a plot of energy of mixing versus PbS/(PbS+Bi2Te2S). The plot features a convex Ttd–Alk–PbS hull. The phases Sdd, Pb6Bi4Te4S8, Pb8Bi4Te4S10, Pb10Bi4Te4S12, Hit and Pb12Bi4Te4S14 all lie below the Alk–PbS part of hull, indicating they can be stable. The two endmembers, tetradymite and PbS, are represented by blue circles; the seven aleksite series phases are represented by red circles. Ttd = tetradymite, Alk = aleksite, Sdd = saddlebackite, Hit = hitachiite.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 79| Part 6| December 2023| Pages 482-494
https://doi.org/10.1107/S2052520623008776
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