COLUMBITE

niobite, columbite

(noun) a black mineral that is an ore of niobium and tantalum

Source: WordNet® 3.1


Etymology

Noun

columbite (plural columbites)

(mineral) A black mineral that is a mixed iron and manganese niobate and tantalate, and is the main ore of niobium and tantalum.

Source: Wiktionary


Co*lum"bite, n. Etym: [Cf. F. colombite. See Columbium.] (Min.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition



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Word of the Day

26 June 2024

INCORPORATE

(verb) include or contain; have as a component; “A totally new idea is comprised in this paper”; “The record contains many old songs from the 1930’s”


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