SrO*2(Al2O3) Boyko E R, Wisnyi L G Acta Crystallographica 11 (1958) 444-445 The optical properties and structures of CaO*2Al2O3 and SrO*2Al2O3 Locality: synthetic _database_code_amcsd 0009209 13.04 9.01 5.55 90 106.502 90 C2/c atom x y z Sr 0 .810 .25 Al1 .169 .086 .295 Al2 .122 .441 .257 O1 0 .526 .25 O2 .117 .048 .544 O3 .127 .260 .175 O4 .188 .447 .598