Barium-deficient celsian, Ba1-xAl2-2xSi2+2xO8 (x=0.20 or 0.06)

M G Skellern, R A Howie, E E Lachowski, J M S Skakle

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12 Citations (Scopus)


Barium-deficient forms of celsian (barium aluminium silicate) with the formula Ba1-xAl2-2xSi2+2xO8 (x = 0.20 and 0.06) have been identified. In contrast with the celsian-orthoclase solid solutions which have been reported previously, these forms, refined in the space group C2/m, with Ba and one O atom in the 4i sites with m site symmetry, and a further O atom in a 4g site with twofold axial symmetry, suggest a slight solid solution with silica. The serendipitous preparation of the compounds represents a possible hazard associated with solid-state synthesis.

Original languageEnglish
Pages (from-to)i11-i14
Number of pages4
JournalActa Crystallographica Section C, Crystal Structure Communications
Publication statusPublished - 2003


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