Sillimanite
Yang H, Hazen R M, Finger L W, Prewitt C T, Downs R T
Physics and Chemistry of Minerals 25 (1997) 39-47
Compressibility and crystal structure of sillimanite, Al2SiO5, at high pressure
Sample: P = 5.29 GPa
_database_code_amcsd 0008111
7.4146 7.5739 5.7450 90 90 90 Pbnm
atom     x     y     z Biso
Al1      0     0     0  .32
Al2  .1405 .3427   .25  .41
Si   .1548 .3386   .75  .47
OA   .3633 .4055   .75  .53
OB   .3551 .4330   .25  .60
OC   .4728 .0031   .75  .76
OD   .1269 .2204 .5146  .53