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3 definitions found

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

 co·lum·bite /kəˈlʌmˌbaɪt, ˈkɑləm-/
 鈳鐵礦; 鈮鐵礦

From: Webster's Revised Unabridged Dictionary (1913)

 Co·lum·bite n.  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.
 

From: WordNet (r) 2.0

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