AM_Chlorothionite Formula: Cu K2 Cl2 S O4 Name: Chlorothionite Unit cell: 7.732 6.078 16.292 90.0 90.0 90.0 , V=765.64 Space group: PNMA (62)

Giacovazzo C , Scandale E , Scordari F , Zeitschrift fur Kristallographie , 144 (1976) p.226-237, The crystal structure of chlorotionite, CuK2Cl2SO4, Locality: 1906 eruption of Vesuvius, Italy