AM_Murmanite Formula: Na4.5 Mn.45 Zr.25 Ca.6 K.2 Ti6.6 Fe.6 Nb.8 Si8 O44 H16 Name: Murmanite Unit cell: 8.7 8.728 11.688 94.31 98.62 105.62 , V=838.84 Space group: P1 (1)

Rastsvetaeva R K , Andrianov V I , Soviet Physics Crystallography , 31 (1986) p.44-48, New data on the crystal structure of murmanite