AM_Ilvaite_23 Formula: Ca.9 Mn.58 Mg.02 Fe2.48 Al.01 Si2 O9 H Name: Ilvaite Unit cell: 12.993 8.825 5.846 90.0 90.03 90.0 , V=670.32 Space group: P121/A1 (14)

Carrozzini B , European Journal of Mineralogy , 6 (1994) p.465-479, Crystal structure refinements of ilvaite: new relationships, between chemical composition and crystallographic parameters, Sample: Oridda X-2.3