AM_Natrolite_20
Formula: Na1.74 Al2 Si3 O11.5 H4
Name: Natrolite
Unit cell: 18.221 18.331 6.536 90.0 90.0 90.0 , V=2183.08
Space group: FDD2 (43)

Baur W H , Joswig W , Neues Jahrbuch fur Mineralogie, Monatshefte , 1996 (1996) p.171-187, The phases of natrolite occurring during dehydration and rehydration studied, by single crystal X-ray diffraction methods between room temperature and 923 K, Locality: Khibiny, Kola peninsula, Russia, Sample: T = 293 K, crystal III, postnatrolite