AM_Andalusite_15 Formula: Al2 Si O5 Name: Andalusite Unit cell: 7.6313 7.78625 5.50175 90.0 90.0 90.0 , V=326.91 Space group: PNNM (58)

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: Minas Gerais, Brazil, Sample: P = 7.565 GPa