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Figure 4
Crystal structure of erionite from Tuzköy (Turkey). (a) View of the crystal packing along the a axis. (b) View of the crystal packing along the b axis. (c) Detail of the erionite cavity and its extra-framework content. (d) Detail of the cancrinite cage hosting the K atom. Legend: electric blue balls = Si, red balls = O atoms (also H2O molecules), ice blue balls = Ca, yellow balls = Na, orange balls = Mg, purple balls = K. The plots were created using the VESTA software (Momma & Izumi, 2011BB62).

IUCrJ
Volume 10| Part 4| July 2023| Pages 397-410
ISSN: 2052-2525
https://doi.org/10.1107/S2052252523003500