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Further detail on the crystal structure of zussmanite

Published online by Cambridge University Press:  05 July 2018

A. Lopes-Vieira  and
J. Zussman
A. Lopes-Vieira
Affiliation:
Department of Geology and Mineralogy, Parks Road, Oxford
J. Zussman
Affiliation:
Department of Geology and Mineralogy, Parks Road, Oxford
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Summary

Mineral data and a brief outline of the structure for zussmanite (ideal formula

KFe13Si17AlO42(OH)14)

have been published previously. This paper describes the determination of the crystal structure and presents and discusses the results. The structure consists of rhombohedrally stacked layers of Fe-(O,OH) octahedra to each side of which are attached rings of six (Si,Al)-O tetrahedra. These composite layers are linked to one another by rings of three (Si,Al)-O tetrahedra, and by potassium atoms, the latter in positions analogous to those in a mica. There is some evidence of disorder of the layer stacking. Interatomic distances and angles, and valency balance, are discussed.

Type
Research Article
Information
Mineralogical Magazine , Volume 37 , Issue 285 , March 1969 , pp. 49 - 60
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1969

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Footnotes

1

Now at Lab. de Technicas Fisico-Quimicas, Junta de Invest. do Ultramar, Alameda D. AlL Henriques, 4I-4 Esq. Lisbon, Portugal.

2

Now at the Department of Geology, The University, Manchester 13, England.

References

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