Columbite-(Mn)
	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: KRA n4 Qm=0.817 from Kragero, Norway
	Sample: Annealed at T = 600 C for t = 67 h
	Note: Occupancies calculated assuming complete Fe/Mn disorder
	_database_code_amcsd 0003863
	14.352 5.740 5.093 90 90 90 Pbcn
	atom x y z occ Uiso
	MnA 0 .32118 .25 .687 .0087
	FeA 0 .32118 .25 .123 .0087
	NbA 0 .32118 .25 .077 .0087
	TaA 0 .32118 .25 .040 .0087
	TiA 0 .32118 .25 .030 .0087
	CaA 0 .32118 .25 .008 .0087
	NbB .16339 .17830 .74020 .849 .0066
	TaB .16339 .17830 .74020 .069 .0066
	MnB .16339 .17830 .74020 .049 .0066
	FeB .16339 .17830 .74020 .009 .0066
	TiB .16339 .17830 .74020 .001 .0066
	O1 .09674 .1020 .0604 .0121
	O2 .41849 .1154 .0934 .0118
	O3 .75638 .1235 .0884 .0095
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