AM_Natrolite_7 Formula: Na2 Al2 Si3 O12 H4 Name: Natrolite Unit cell: 18.307 18.623 6.5872 90.0 90.0 90.0 , V=2245.78 Space group: FDD2 (43)

Baur W H , Kassner D , Kim C , Sieber N H W , European Journal of Mineralogy , 2 (1990) p.761-769, Flexibility and distortion of the framework of natrolite: crystal, structures of ion-exchanged natrolites, Sample: natrolite, NA