AM_Ilvaite_7 Formula: Ca Fe2.81 Mg.06 Al.08 Mn.05 Si2 H O9 Name: Ilvaite Unit cell: 13.012 8.801 5.85 90.0 90.0 90.0 , V=669.93 Space group: PNAM (62)

Bonazzi P , Bindi L , American Mineralogist , 84 (1999) p.1604-1612, Structural adjustments induced by heat treatment in ilvaite, Sample: RM at T = 615 deg C