AM_Peretaite Formula: Sb4 Ca S2 O16 H6 Name: Peretaite Unit cell: 24.665 5.6006 10.185 90.0 95.98 90.0 , V=1399.29 Space group: C12/C1 (15)

Menchetti S , Sabelli C , American Mineralogist , 65 (1980) p.940-946, Peretaite, CaSb4O4(OH)2(SO4)2*2H2O: Its atomic arrangement and twinning