AM_Lavenite Formula: Na1.5 Ca.74 Zr.91 Nb.14 Fe.22 Mn.32 Ti.16 Mg.01 Si2 O8 F Name: Lavenite Unit cell: 10.83 9.98 7.174 90.0 108.1 90.0 , V=737.02 Space group: P121/A1 (14)

Mellini M , Tschermaks Mineralogische und Petrographische Mitteilungen , 28 (1981) p.99-112, Refinement of the crystal structure of lavenite, Locality: Langesund, Norway