AM_Sidpietersite Formula: Pb4 S2 O7 H2 Name: Sidpietersite Unit cell: 7.455 6.496 11.207 114.33 89.65 88.69 , V=494.33 Space group: P-1 (2)

Cooper M A , Hawthorne F C , The Canadian Mineralogist , 37 (1999) p.1275-1282, The structure topology of sidpietersite, Pb4(SO3S)O2(OH)2,, a novel thiosulfate structure