AM_Metanatrolite Formula: Si2.691 Al1.817 O10 Na1.67 Name: Metanatrolite Unit cell: 16.277 17.045 6.434 90.0 90.0 90.08 , V=1785.06 Space group: F112 (5)

Joswig W , Baur W H , Neues Jahrbuch fur Mineralogie, Monatshefte , 1995 (1995) p.26-38, The extreme collapse of a framework of NAT topology:, the crystal structure of a metanatrolite (dehydrated natrolite) at 548 K, Locality: Salesl, Czech Republic, Sample: T = 548 K