COLUMBITE


Meaning of COLUMBITE in English

( 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.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.