AM_Ilvaite_3 Formula: Ca Fe2.88 Mg.03 Al.04 Mn.05 Si2 H O9 Name: Ilvaite Unit cell: 13.014 8.807 5.846 90.0 90.1 90.0 , V=670.03 Space group: P121/A1 (14)

Bonazzi P , Bindi L , American Mineralogist , 84 (1999) p.1604-1612, Structural adjustments induced by heat treatment in ilvaite, Sample: RM at T = 450 deg C