AM_Zippeite_2 Formula: U8 S4 Na5 O52 H27 Name: Zippeite Unit cell: 17.6425 14.6272 17.6922 90.0 104.461 90.0 , V=4421.01 Space group: P121/N1 (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 : Sodium-zippeite