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Definition of Columbite
1. Noun. A black mineral that is an ore of niobium and tantalum.
Exact synonyms: Niobite
Terms within: Atomic Number 41, Nb, Niobium, Atomic Number 73, Ta, Tantalum
Generic synonyms: Mineral
Terms within: Atomic Number 41, Nb, Niobium, Atomic Number 73, Ta, Tantalum
Generic synonyms: Mineral
Definition of Columbite
1. n. A mineral of a black color, submetallic luster, and high specific specific gravity. It is a niobate (or columbate) of iron and manganese, containing tantalate of iron; -- first found in New England.
Definition of Columbite
1. [n -S]