Bafertisite
is the first new mineral found in the Bayan Obo iron mine, Inner Mongolia, China.
This study compiled all the expressions related to the formula. Combined with
the structural refinements of type bafertisite and minerals alike conducted
home and abroad and the preliminarily-published chemical compositions, we
calculated and re-evaluated atoms per formula unit using three calculation methods.
Based on this research, the crystal chemical formula of type bafertisite was
improved tentatively.