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Hematophanite, a derivative of the perovskite structure1

Published online by Cambridge University Press:  05 July 2018

R. C. Rouse
R. C. Rouse*
Affiliation:
Department of Geology and Mineralogy, The University of Michigan, Ann Arbor, Michigan, U.S.A.
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Summary

Hematophanite, ideally Pb4Fe3O8Cl, is tetragonal, space group P4mm, with a = 3·92 and c = 15·31 Å. The crystal structure, which has been refined to an R-factor of 9·1 %, may be described as an interlayering of perovskite-like units with a cesium chloride or, alternatively, a nadoritelike unit. The nadorite-like part consists of a double layer of PbO4Cl4 distorted square antiprisms. Iron atoms are in 6-fold (tetragonal bipyramidal) and 5-fold (square pyramidal) coordination.

Type
Research Article
Information
Mineralogical Magazine , Volume 39 , Issue 301 , March 1973 , pp. 49 - 53
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1973

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Footnotes

2

Present address: Dept. of Mineral Sciences, Smithsonian Institution, Washington, D.C. 20560.

1

Contribution No. 3o7, The Mineralogical Laboratory, Department of Geology and Mineralogy, The University of Michigan

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