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Figure 4
(a) Filtered [001] HAADF image of denisovite. (b) Enlarged part with the unit cell and symmetry elements; one of the circular contrasts is marked by a white circle. (c) Three weak arch-like fragments (red rectangles) are situated close to the three weak arch-like areas of the circular contrast (white rectangles). Turquoise circles indicate independent Ca positions.

IUCrJ
Volume 4| Part 3| May 2017| Pages 223-242
ISSN: 2052-2525
https://doi.org/10.1107/S2052252517002585