AM_Laumontite_6 Formula: Si4 Al2 O16.1 Ca H6.1 Name: Laumontite Unit cell: 14.6967 13.0756 7.47 90.0 111.785 90.0 , V=1332.98 Space group: C12/M1 (12)

Stahl K , Artioli G , Hanson J C , Physics and Chemistry of Minerals , 23 (1996) p.328-336, The dehydration process in the zeolite laumontite:, a real-time synchrotron X-ray powder diffraction study, Sample: T = 425 K