AM_Vishnevite_1 Formula: O14.67 Si3 Al3 S.24 Na3.25 K.51 Ca.06 Name: Vishnevite Unit cell: 12.685 12.685 5.179 90.0 90.0 120.0 , V=721.70 Space group: P63 (173)

Hassan I , Grundy H D , The Canadian Mineralogist , 22 (1984) p.333-349, The character of the cancrinite-vishnevite solid-solution series