AM_Zippeite_5 Formula: U4 S2 Mg2 O27 H14 Name: Zippeite Unit cell: 8.6514 14.1939 17.7211 90.0 104.131 90.0 , V=2110.25 Space group: C12/M1 (12)

Burns P C , Deely K M , Hayden L A , The Canadian Mineralogist , 41 (2003) p.687-706, The crystal chemistry of the zippeite group, Sample: Magnesium-zippeite