AM_Ilvaite_19 Formula: Ca Fe2.79 Mg.02 Al.09 Mn.1 Si2 O9 H Name: Ilvaite Unit cell: 13.006 8.808 5.858 90.0 90.31 90.0 , V=671.06 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-2