AM_Buddingtonite Formula: N D4 (Al Si3) O8 Name: Buddingtonite Unit cell: 8.79182 13.11084 7.20473 90.0 116.097 90.0 , V=745.81 Space group: C12/M1 (12)

Mookherjee M , Redfern S A T , Swainson I , Harlov D E , Physics and Chemistry of Minerals , 31 (2004) p.643-649, Low-temperature behaviour of ammonium ion in buddingtonite, [N(D/H)4AlSi3O8] from neutron powder diffraction, Sample: T = 11 K