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 = 1.23 GPa
_database_code_amcsd 0008108
7.4732 7.6520 5.7631 90 90 90 Pbnm
atom     x     y     z Biso
Al1      0     0     0  .34
Al2  .1414 .3444   .25  .47
Si   .1536 .3394   .75  .43
OA   .3611 .4069   .75  .60
OB   .3554 .4348   .25  .48
OC   .4758 .0010   .75  .87
OD   .1255 .2228 .5150  .47