AM_Seidozerite Formula: Zr1.38 Ti1.36 Fe.32 Mg.305 Nb.04 Mn.425 Ca.26 Na3.91 Si4 O15 F3 Name: Seidozerite Unit cell: 5.5558 7.0752 18.406 90.0 102.713 90.0 , V=705.77 Space group: P12/C1 (13)

Christiansen C C , Johnsen O , Makovicky E , The Canadian Mineralogist , 41 (2003) p.1203-1224, Crystal chemistry of the rosenbuschite group, Sample: 1993.158