Mineralogy Database

Columbite-(Fe) Mineral Data

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General Columbite-(Fe) Information

Help on Chemical  Formula: Chemical Formula: Fe++Nb2O6
Help on Composition: Composition: Molecular Weight = 337.66 gm
   Niobium  55.03 %  Nb   78.72 % Nb2O5
   Iron     16.54 %  Fe   21.28 % FeO
   Oxygen   28.43 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+Nb2O6
Help on Environment: Environment: Pegmatites, and alluvial deposits.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1802
Help on Locality: Locality: M'buye Mine, Rwanda. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its content of the element niobium, formerly called columbium and the Latin ferrium - "iron."
Help on Name Pronunciation: Name Pronunciation: Columbite-(Fe) + Pronunciation Say COLUMBITE-(FE)
Help on Synonym: Synonym: Coltan
  Ferrocolumbite - Renamed to Columbite-(Fe) by Mineralogical Record, v39 (2008), p 131