AM_Ferricopiapite_1 Formula: Fe4.633 S6 O46 D42 Name: Ferricopiapite Unit cell: 7.3926 18.3806 7.3361 93.933 102.212 98.9 , V=957.23 Space group: P-1 (2)

Majzlan J , Kiefer B , The Canadian Mineralogist , 44 (2006) p.1227-1237, An X-ray and neutron-diffraction study of synthetic ferricopiapite,, Fe14/3(SO4)6(OD,OH)2(D2O,H2O)20, and ab-initio calculations on the structure of, magnesiocopiapite MgFe4(SO4)6(OH)2(H2O)20, Locality: synthetic