columbite definition

  • noun:
    • A black, red-brown, or colorless mineral, basically (Fe, Mn)(Nb, Ta)2O6, the principal ore of niobium.
    • A black mineral that's a mixed metal and manganese niobate and tantalate, and is the primary ore of niobium and tantalum.
    • A mineral of a black color, submetallic luster, and high certain specific gravity. It is a niobate (or columbate) of metal and manganese, containing tantalate of metal; -- first found in New England.
    • The local niobate (columbate) of iron, a mineral of black color and high specific gravity, crystallizing in the orthorhombic system.
    • a black mineral which an ore of niobium and tantalum
    • A black, red-brown, or colorless mineral, basically (Fe, Mn)(Nb, Ta)2O6, the principal ore of niobium.
    • A black mineral this is certainly a mixed metal and manganese niobate and tantalate, and is the main ore of niobium and tantalum.
    • A mineral of a black shade, submetallic luster, and high specific specific gravity. Its a niobate (or columbate) of iron and manganese, containing tantalate of iron; -- first-found in New The united kingdomt.
    • The native niobate (columbate) of iron, a mineral of black shade and large specific gravity, crystallizing within the orthorhombic system.
    • a black mineral which an ore of niobium and tantalum

Related Sources

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