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Figure 2
The (1b) structure type observed in M2(PO4)X minerals (C2/c), where M = Fe2+, Mn2+ and X− = F (Rea & Kostiner, 1972BB55; Yakubovich et al., 1978BB74). PO4 units are displayed as grey tetrahedra, five- or six-coordinated cations as red spheres and F/O(H) atoms as green spheres.

Journal logoSTRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS
ISSN: 2052-5206
Volume 70| Part 2| March 2014| Pages 243-258
doi:10.1107/S2052520613031247
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