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 = 3.72 GPa
_database_code_amcsd 0008110
7.4345 7.5989 5.7507 90 90 90 Pbnm
atom     x     y     z Biso
Al1      0     0     0  .31
Al2  .1409 .3434   .25  .39
Si   .1543 .3389   .75  .43
OA   .3620 .4060   .75  .54
OB   .3559 .4334   .25  .51
OC   .4745 .0028   .75  .78
OD   .1266 .2211 .5152  .51