AM_Andalusite_13 Formula: Al2 Si O5 Name: Andalusite Unit cell: 7.7014 7.8354 5.52629 90.0 90.0 90.0 , V=333.48 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 = 3.932 GPa