AM_Ilvaite_20 Formula: Ca Fe2.78 Mg.02 Al.09 Mn.1 Si2 O9 H Name: Ilvaite Unit cell: 13.014 8.811 5.852 90.0 90.07 90.0 , V=671.03 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: Cinco Villas X-3