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Figure 5
Face indexes of 1. The left photo is 1 on a microscope. The crystal with face indexes described on the right was obtained from part of a crystal enclosed by the red broken line.

IUCrJ
Volume 3| Part 2| March 2016| Pages 139-151
ISSN: 2052-2525
https://doi.org/10.1107/S2052252515024379