AM_Natrolite_14 Formula: Si3 Al2 O12 H3 Name: Natrolite Unit cell: 17.912 18.474 6.542 90.0 90.0 90.0 , V=2164.79 Space group: C1121 (1)

Stuckenschmidt E , Joswig W , Baur W H , European Journal of Mineralogy , 8 (1996) p.85-92, Flexibility and distortion of the collapsible framework of NAT topology:, the crystal structure of H3O-natrolite