AM_Zippeite_6 Formula: U4 S2 Zn2 O27 H14 Name: Zippeite Unit cell: 8.6437 14.1664 17.701 90.0 104.041 90.0 , V=2102.73 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: Zinc-zippeite