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. 4 _database_code_amcsd 0005087 10.3947 10.3947 10.3947 90 90 90 Fd3m atom x y z Biso Nb 5/8 5/8 5/8 2.00 Ca .125 .125 .125 2.00 O .315 0 0 2.00 F 0 0 0 2.00