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. 1
_database_code_amcsd 0005084
10.43 10.43 10.43 90 90 90 Fd3m
atom    x    y    z Biso
Nb    5/8  5/8  5/8 1.59
Ca   .125 .125 .125 1.59
O    .316    0    0 1.59
F       0    0    0 1.59