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(Minerals) another name for columbite
[C19: niobium + -ite1]
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|Noun||1.||niobite - a black mineral that is an ore of niobium and tantalum|
atomic number 41, Nb, niobium - a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium
atomic number 73, Ta, tantalum - a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition