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Figure 5
Fragment of the crystal structure of kieserite (MgSO4·H2O) at 313 K, projected down the approximate c* direction, i.e. along [203]. On cooling, the black arrows show the direction of polyhedral rotations, red arrows indicate the components of the resulting positional shifts of the tetrahedral atoms in the plane of projection (see text).

IUCrJ
Volume 9| Part 2| March 2022| Pages 194-203
ISSN: 2052-2525
https://doi.org/10.1107/S2052252521012720