Structural Factors Controlling Stacking Sequences in Dioctahedral Micas
- 1 July 1971
- journal article
- Published by Cambridge University Press (CUP) in Clays and Clay Minerals
- Vol. 19 (3) , 159-165
- https://doi.org/10.1346/ccmn.1971.0190304
Abstract
Deviations in the symmetry of mica single layers from the ideal arrangement with all atoms in hexagonal arrays are caused by the structural factors such as compositional variation (substitutions), order-disorder, and distortions. The derivative crystal structure theory as applied to mica polymorphism, implies that the ideal symmetry of the mica single layer (C2/m) can be altered to one of its standard subgroups by these structural factors. The “derivative structure” of the single layer may allow a unique interlayer and a specific intralayer configuration and result in a regular stacking sequence.Keywords
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