AM_Zippeite_4 Formula: U2 S O10 N2 Name: Zippeite Unit cell: 14.252 8.7748 17.1863 90.0 90.0 90.0 , V=2149.29 Space group: CMCA (64)

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: SZIPPNH4II