Pyrochlore
Perrault G
The Canadian Mineralogist 9 (1968) 383-402
La composition chimique et la structure cristalline du pyrochlore d'Oka, P.Q.
Sample: No. 3
_database_code_amcsd 0005086
10.428 10.428 10.428 90 90 90 Fd3m
atom    x    y    z Biso
Nb    5/8  5/8  5/8 1.49
Ca   .125 .125 .125 1.49
O    .322    0    0 1.49
F       0    0    0 1.49