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. 2
_database_code_amcsd 0005085
10.393 10.393 10.393 90 90 90 Fd3m
atom    x    y    z Biso
Nb    5/8  5/8  5/8 1.45
Ca   .125 .125 .125 1.45
O    .313    0    0 1.45
F       0    0    0 1.45