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Figure 7
Structural sheets, symmetry elements and the respective layer group symmetries for zippeite-group minerals: (a) magnesiozippeite (real LG), (b) pseudojohannite (real LG), (c) holosymmetrical OH-free structure, (d) zippeite (the highest LG), (e) sejkoraite-(Y) (real LG) and (f) ammonio­zippeite (the highest LG).

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 75| Part 1| February 2019| Pages 39-48
https://doi.org/10.1107/S2052520618016098
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