Columbite

(definition) by Webster 1913 Tue Dec 21 1999 at 22:36:10

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

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.

 

© Webster 1913.

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