Sillimanite
Burt J B, Ross N L, Angel R J, Koch M
American Mineralogist 91 (2006) 319-326
Equations of state and structures of andalusite
to 9.8 GPa and sillimanite to 8.5 GPa
Locality: Okkamitiya Sabaragamuiwa province, Sri Lanka
Sample: P = 7.663 GPa
_database_code_amcsd 0004113
7.3717 7.5243 5.72421 90 90 90 Pbnm
atom     x     y     z Biso
Al1      0     0     0  .25
Al2  .1397 .3389   .25  .32
Si   .1550 .3363   .75  .25
OA   .3642 .4117   .75  .22
OB   .3550 .4411   .25  .55
OC   .4723 .0033   .75  .84
OD   .1285 .2167 .5148  .47