Possible structural polymorphism in Al-bearing magnesiumsilicate post-perovskite by O. Tschauner, B. Kiefer, H. Liu, S. Sinogeikin, M. Somayazulu, S.N. Luo (vol. 93, p. 533–539, 2008: Erratum DOI 10.2138/am.2008.522).

On page 534 in the caption of Figure 1 the fractional coordinates of the 2 × 1 type postperovskite structure are partially incorrect. 2 × 1 postperovskite crystallizes in space group 11 (P121/m1). The correct atomic coordinates are as follows:

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