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Acta Cryst. (2014). C70, 256-259  [ doi:10.1107/S2053229614002423 ]

Disordered kalsilite KAlSiO4

A. Kremenovic and P. Vulic

Synopsis: The directionality of (Al,Si)O4 tetra­hedra within six-membered rings (S6R) could not be defined in disordered kalsilite, i.e. equal probability for U or D directionality [free apex pointing up (U) or down (D)] of (Al,Si)O4 tetra­hedra is established. In ordered kalsilite, S6R of (Al,Si)O4 tetra­hedra are characterized with the UDUDUD sequence of the directionality of the tetra­hedra.

Formula: KAlSiO4

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