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Figure 7
The structural model of denisovite based on HAADF image interpretation. The unit cell and symmetry elements are shown. Silicate chains are shown in yellow, (Ca,Na) octahedra in green and K+ ions as large brown circles, and turquoise, purple and black small circles represent oxygen, F/OH and H positions, respectively.

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