Mullite
Fischer R X, Schneider H, Schmucker M
American Mineralogist 79 (1994) 983-990
Crystal structure of Al-rich mullite
_database_code_amcsd 0001673
7.7391 7.6108 2.9180 90 90 90 Pbam
atom     x     y  z  occ Biso
Al       0     0  0      1.93
AlT  .1479 .3317 .5   .5  .16
SiT  .1479 .3317 .5 .087  .16
Al*   .259 .2203 .5 .294   .5
Al**  .335  .103 .5 .119    3
Oab  .3539 .4209 .5       1.9
Oc    .470  .028 .5 .294  4.2
Od   .1336 .2164  0       2.9