AM_Zippeite_8 Formula: U4 Mg2 S2 O31 H22 Name: Zippeite Unit cell: 8.6457 17.2004 18.4642 90.0 102.119 90.0 , V=2684.61 Space group: P121/C1 (14)

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: SZIPPMg