Crystal chemical formula for sartorite homologues. (2nd January 2018) - Makovicky, Emil
Abstract: The members of the sartorite homologous series are complex sulfides Me 2+ 8N –1 6–2X Me 3+ 1 6+ X Me + X S8N+8 where Me 2+ is Pb and Me 3+ is As and Sb, whereas Me + is Ag and/or Tl. This paper presents calculation formulae for the homologue order N and for the separate substitution percentages for Tl + (As, Sb) ↔ 2Pb and Ag + (As, Sb) ↔ 2Pb substitutions. This enables one to evaluate the crystal chemistry and build a systematic classification of the sartorite homologues.