L Guowu, Y Guangming, L Fude… - The Canadian …, 2016 - pubs.geoscienceworld.org
Abstract Fluorcalciopyrochlore, ideally (Ca, Na) 2 Nb 2 O 6 F, cubic, is a new mineral
species (IMA2013-055) occurring in the Bayan Obo Fe-Nb-REE deposit, Inner Mongolia …