Neighborite
Chen J, Liu H, Martin C D, Parise J B, Weidner D J
American Mineralogist 90 (2005) 1534-1539
Crystal chemistry of NaMgF3 perovskite and high pressure and temperature
Sample: P = 4 GPa, T = 700 C
_database_code_amcsd 0003928
5.3915 5.4532 7.6831 90 90 90 Pbnm
atom     x     y     z Uiso
Na   .9988 .0286   .25 .053
Mg       0    .5     0 .018
F1   .0697 .4842   .25 .034
F2   .7078 .2978 .0396 .044