AM_Andalusite_3
Formula: Al2 Si O5
Name: Andalusite
Unit cell: 7.8759 7.9567 5.5664 90.0 90.0 90.0 , V=348.82
Space group: PNNM (58)

Winter J K , Ghose S , American Mineralogist , 64 (1979) p.573-586, Thermal expansion and high-temperature crystal chemistry of the Al2SiO5, polymorphs, T = 800 deg C