Buddingtonite
Mookherjee M, Redfern S A T, Swainson I, Harlov D E
Physics and Chemistry of Minerals 31 (2004) 643-649
Low-temperature behaviour of ammonium ion in buddingtonite
[N(D/H)4AlSi3O8] from neutron powder diffraction
Sample: T = 11 K
_database_code_amcsd 0008919
8.79182 13.11084 7.20473 90 116.097 90 C2/m
atom     x      y     z occ    Uiso
N    .2903      0 .1424      .01452
D1   .4147  .0190 .2066  .5  .03999
D2   .2614 -.0311 .2518  .5  .03999
D3   .2659 -.0513 .0275  .5  .03999
D4   .2191  .0634 .0838  .5  .03999
Al1  .7070  .1179 .3447 .25  .00056
Si1  .7070  .1179 .3447 .75  .00056
Al2  .0167  .1881 .2347 .25  .00243
Si2  .0167  .1881 .2347 .75  .00243
O1       0  .1580     0     -.00506
O2   .6607      0 .2950     -.00506
O3   .8274  .1587 .2252     -.00506
O4   .0399  .3123 .2624     -.00506
O5   .1713  .1260 .4071     -.00506