Mullite Popovic J, Tkalcec E, Grzeta B, Kurajica S, Schmauch J American Mineralogist 92 (2007) 408-411 Cobalt incorporation in mullite Sample: MU0 _database_code_amcsd 0004280 7.5520 7.6872 2.8843 90 90 90 Pbam atom x y z occ Biso AlM1 0 0 0 .19 AlT .1493 .3406 .5 .50 .36 SiT .1493 .3406 .5 .36 .36 AlT' .264 .204 .5 .14 .43 Oab .3583 .4219 .5 .24 Od .1273 .2201 0 .45 Oc .5 0 .5 .58 1.12 Oc' .452 .044 .5 .14 1.28