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Webster 1913 Edition
Columbite
Co-lum′bite
,Noun.
[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 1828 Edition
Columbite
COLUMBITE
,Noun.