AM_Sillimanite_8 Formula: Al2 Si O5 Name: Sillimanite Unit cell: 7.4604 7.6395 5.7584 90.0 90.0 90.0 , V=328.19 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 = 1.548 GPa