(IUCr) Na<span class="inf"><sub>7</sub></span>Al<span class="inf"><sub>3</sub></span>(As<span class="inf"><sub>2</sub></span>O<span class="inf"><sub>7</sub></span>)<span class="inf"><sub>4</sub></span>

Acta Crystallographica Section E
Acta Crystallographica
Section E CRYSTALLOGRAPHIC COMMUNICATIONS

IUCr IT WDC

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[Figure 4]

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Figure 4 Alternate stacking of octahedral AlO₆ layers and As₂O₇ groups layers parallel to (−101).

CRYSTALLOGRAPHIC
COMMUNICATIONS

ISSN: 2056-9890

Volume 69| Part 8| July 2013| Page i53

doi:10.1107/S1600536813020151

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