Aravaite, Ba2Ca18(SiO4)6(PO4)3(CO3)F3O: modular structure and disorder of a new mineral with single and triple antiperovskite layers

Krüger, B.; Krüger, H.; Galuskin, E.V.; Galuskina, I.O.; Vapnik, Y.; Olieric, V.; Pauluhn, A.

doi:10.1107/S2052520618012271

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 2
SEM micrographs (backscattered electron mode). (a) Aravaite intergrown with stracherite. A fragment of this crystal was used for the structural study. This is a rare example of spurrite marble, in which ariegilatite is absent. (b) Epitaxial intergrowth of three intercalated antiperovskites: aravaite, ariegilatite and stracherite. Arv is aravaite, Ari is ariegilatite, HSi is undiagnosed hydrosilicates, May is fluormayenite–fluorkyuygenite, Shl is shulamitite, Spu is spurrite, Sta is stracherite.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 74| Part 6| December 2018| Pages 492-501

https://doi.org/10.1107/S2052520618012271

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