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Crystal chemical formula for sartorite homologues

Published online by Cambridge University Press:  02 January 2018

Emil Makovicky*
Affiliation:
Institute for Geoscience and Mineral Resources Management, University of Copenhagen, Østervoldgade 10, DK-1350, Copenhagen K, Denmark
Dan Topa
Affiliation:
Natural History Museum-Wien, Burgring 7, 1010 Vienna, Austria
*

Abstract

The members of the sartorite homologous series are complex sulfides Me2+8N–16–2XMe3+16+XMe+XS8N+8 where Me2+ is Pb and Me3+ 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.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 2015

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