Mullite
Balzar D, Ledbetter H
American Mineralogist 78 (1993) 1192-1196
Crystal structure and compressibility of 3:2 mullite
_database_code_amcsd 0001618
7.54336 7.69176 2.88402 90 90 90 Pbam
atom     x     y  z  occ Biso
Al       0     0  0       .23
Al1  .1485 .3407 .5 .525  .24
Si1  .1485 .3407 .5 .342  .24
Al2  .2610 .2073 .5 .100  .00
Si2  .2610 .2073 .5 .033  .00
O1   .3577 .4235 .5      2.12
O2      .5     0 .5 .475 2.06
O3   .4635 .0465 .5 .198 4.53
O4   .1265 .2197  0      2.16