AM_Tachyhydrite Formula: Ca Cl6 Mg2 O12 H24 Name: Tachyhydrite Unit cell: 10.136 10.136 17.318 90.0 90.0 120.0 , V=1540.85 Space group: R11-3 (1)

Clark J R , Evans H T , Erd R C , Acta Crystallographica, Section B , 36 (1980) p.2736-2739, Tachyhydrite, dimagnesium calcium chloride 12-hydrate, Locality: synthetic