AM_Sillimanite_9 Formula: Al2 Si O5 Name: Sillimanite Unit cell: 7.42183 7.5868 5.74298 90.0 90.0 90.0 , V=323.38 Space group: PBNM (62)

Burt J B , Ross N L , Angel R J , Koch M , American Mineralogist , 91 (2006) p.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 = 4.144 GPa