AM_Melanite_8 Formula: Ca2.973 Na.018 Zr.016 V.024 Al.26 Fe1.438 Mn.031 Mg.089 Si2.657 Ti.494 O12 Name: Melanite Unit cell: 12.071 12.071 12.071 90.0 90.0 90.0 , V=1758.85 Space group: IA-3D (230)

Quartieri S , Boscherini F , Chaboy J , Dalconi M C , Oberti R , Zanetti A , Physics and Chemistry of Minerals , 29 (2002) p.495-502, Characterization of trace Nd and Ce site preference and coordination in natural, melanites: a combined X-ray diffraction and high-energy XAFS study, Sample: 89/35