Referenza:
▪ Kaneva, E.V., Sapozhnikov, A.N., Suvorova, L.F. (2017): Crystal structure of chlorinated mineral of cancrinite group with bystrite-type framework. Crystallography Reports, 62, 558–565.
Abstract:
The formula of chlorinated bystrite (rare mineral of cancrinite group) has been refined to Na7.22Ca0.92[Al6Si6O24](S5)0.94Cl1.01. The X-ray diffraction data on the contents of chlorine and sulfur in this mineral are confirmed by the results of chemical analysis. The bystrite cage is found to contain a (S5)2–cluster, which is elongated along the c axis and has a chain configuration. Different ways of aggregation of sulfur atoms lead to cis- and trans-configurations of chains. Columns of cancrinite cages contain–Ca–Cl–Ca–Cl–chains, which were observed previously in the structures of minerals of davyne subgroup, afghanite, and tounkite.
Crystal structure of chlorinated mineral of cancrinite group with bystrite-type framework
- Marco E. Ciriotti
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Crystal structure of chlorinated mineral of cancrinite group with bystrite-type framework
Marco E. Ciriotti
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