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Structural Data for Sudoite

Published online by Cambridge University Press:  02 April 2024

Cheng-yi Lin*
Affiliation:
Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706
S. W. Bailey
Affiliation:
Department of Geology and Geophysics, University of Wisconsin, Madison, Wisconsin 53706
*
1Present address: Center of Materials Analysis, Nanjing University, China.

Abstract

Single crystals of sudoite from Ottré, Belgium, allow confirmation of a dioctahedral 2:1 layer and a trioctahedral interlayer in a IIb arrangement. A regular 2-layer s structure is formed in which the octahedral stagger within both 2:1 layers is directed along X1 and adjacent layers are alternately displaced by a2/3 and a3/3. Poor quality crystals and twinning prevented three-dimensional refinement. One-dimensional refinement suggests that the smaller d(001) value of dioctahedral chlorites relative to trioctahedral species is due primarily to the thinner dioctahedral sheet.

Type
Research Article
Copyright
Copyright © 1985, The Clay Minerals Society

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