The crystal structure of Tl.sub.2.36./sub.Sb.sub.5.98./sub.As.sub.4.59./sub.S.sub.17./sub., the lead-free endmember of the chabournéite homeotypic group

0545149 - FZÚ 2022 RIV CA eng J - Journal Article
Makovicky, E. - Plášil, Jakub - Kasatkin, A.V. - Škoda, R.
The crystal structure of Tl_2.36Sb_5.98As_4.59S₁₇, the lead-free endmember of the chabournéite homeotypic group.
Canadian Mineralogist. Roč. 59, č. 3 (2021), s. 533-547. ISSN 0008-4476. E-ISSN 1499-1276
R&D Projects: GA MŠMT LM2018110
Institutional support: RVO:68378271
Keywords : chabournéite * sulfosalt * homeotypic group * endmember * Vorontsovskoe gold deposit
OECD category: Mineralogy
Impact factor: 0.817, year: 2021
Method of publishing: Limited access
https://doi.org/10.3749/canmin.2000093

The crystal structure of Tl2.36Sb5.98As4.59S17, the lead-free endmember of the chabournéite homeotypic group, from the Tl-As-Sb-rich gold deposit at Vorontsovskoye (the Urals, Russia) was determined and refined to R(obs) 0.099 for 9340 unique observed X-ray reflections. The crystal structure is composed of (001) slabs based on PbS and SnS archetypes, arranged in regular alternation. Twinning of chabournéite is connected with the (imperfect) order-disorder character of the structure, which is connected with the configurations observed on slab boundaries. The structure refinement of the lead-free Tl-(Sb,As) chabournéite endmember presented in this paper is the best starting point for a restudy of all complexities of the chabournéite homeotypic group.
Permanent Link: http://hdl.handle.net/11104/0321948