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Incommensurate superlattice ordering in priderite

Published online by Cambridge University Press:  05 July 2018

A. Pring
Affiliation:
Department of Physical Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EP
D. A. Jefferson
Affiliation:
Department of Physical Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EP

Abstract

The mineral priderite has been examined by electron microprobe analysis and electron diffraction. The composition was approximately (K0.97Ba0.33)(Fe1.17Ti6.60Mg0.23)O16, which is in line with the observed superlattice periodicity of m = 5.88, there being inter-growths of m = 5 and m = 6 superstructures. A surprisingly high degree of lateral correlation between tunnel cations was noted.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1983

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