Columbite-(Fe)
	Tarantino S C, Zema M
	American Mineralogist 90 (2005) 1291-1300
	Mixing and ordering behavior in manganocolumbite-ferrocolumbite solid solution:
	A single-crystal X-ray diffraction study
	Sample: BRA n18 Qm=0.618 from S. Jose de Safira, Minas Gerais, Brazil
	Note: Occupancies calculated assuming complete Fe/Mn disorder
	_database_code_amcsd 0003851
	14.2427 5.7290 5.0856 90 90 90 Pbcn
	atom x y z occ Uiso
	FeA 0 .33008 .25 .589 .0077
	NbA 0 .33008 .25 .250 .0077
	MnA 0 .33008 .25 .156 .0077
	TaA 0 .33008 .25 .005 .0077
	NbB .162922 .17652 .74777 .825 .0066
	FeB .162922 .17652 .74777 .100 .0066
	TaB .162922 .17652 .74777 .048 .0066
	MnB .162922 .17652 .74777 .027 .0066
	O1 .09492 .1065 .0718 .0091
	O2 .42004 .1170 .0936 .0100
	O3 .75627 .1218 .0823 .0082
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