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Figure 2
Sequence of tridymite phases and crystal structures. Reproduced with permission from Pryde & Dove (1998BB11), copyright (1998) Springer Nature.

IUCrJ
Volume 5| Part 3| May 2018| Pages 325-334
ISSN: 2052-2525
https://doi.org/10.1107/S2052252518004803