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Figure 4
Diopside-(Fe). (left) Zero-frame with ±10° oscillation around the tilt axis of a crystal microvolume in the polished thin section. (right) The corresponding pattern indexed by ROT, the rotation function variant of equation (3)[link] (background removed).

IUCrJ
Volume 2| Part 4| June 2015| Pages 452-463
ISSN: 2052-2525
doi:10.1107/S2052252515007794