Mullite Fischer R X, Schneider H American Mineralogist 85 (2000) 1175-1179 Crystal structure of Cr-mullite Sample: fixed slit, monochromatic _database_code_amcsd 0002492 7.56712 7.70909 2.90211 90 90 90 Pbam atom x y z occ Biso AlM1 0 0 0 .75 .52 CrM1 0 0 0 .25 .52 AlT .1482 .3416 .5 .5 .69 SiT .1482 .3416 .5 .39 .69 AlT* .2599 .2002 .5 .11 .1 Oab .3565 .4217 .5 1.31 Oc .5 0 .5 1.6 Oc* .4360 .0479 .5 .11 .7 Od .1275 .2249 0 1.26