Meniaylovite.826 Formula: Ca4 (Si Al) S O16 F13 H24 Name: Meniaylovite Unit cell: 16.71 16.71 16.71 90.0 90.0 90.0 , V=4665.83 Space group: Fd3 (203)
Mathew M , Takagi S , Waerstad K R , Frazier A W , American Mineralogist , 66 (1981) p.392-397, The crystal structure of synthetic chukhrovite, Ca4AlSi(SO4)F13*12H2O