AM_Vlodavetsite Formula: Al Ca2 S2 F2 Cl O12 H8 Name: Vlodavetsite Unit cell: 6.87 6.87 13.342 90.0 90.0 90.0 , V=629.70 Space group: I14/M1 (1)

Starova G L , Filatov S K , Matusevich G L , Fundamensky V S , Mineralogical Magazine , 59 (1995) p.159-162, The crystal structure of vlodavetsite, AlCa2(SO4)2F2Cl*4H2O, Locality: Tolbachik Main Fracture Eruption, Kamchatka, Russia