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3 definitions found

From: DICT.TW English-Chinese Dictionary 英漢字典

 niobite
 鈮鐵礦

From: Webster's Revised Unabridged Dictionary (1913)

 ni·o·bite n. Min. Same as Columbite.
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From: WordNet (r) 2.0

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