AM_Buddingtonite_1 Formula: N D4 (Al Si3) O8 Name: Buddingtonite Unit cell: 8.81611 13.09609 7.20155 90.0 116.121 90.0 , V=746.55 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 = 210 K