niobite

2 definitions found

niobite - Collaborative International Dictionary of English v.0.48 :

  niobite \ni"o*bite\, n. (Min.)
     Same as Columbite.
     [1913 Webster]

niobite - WordNet (r) 2.1 (2005) :

  niobite
      n 1: a black mineral that is an ore of niobium and tantalum
           [syn: niobite, columbite]