Mineralogy Database

Tantalite-(Fe) Mineral Data

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General Tantalite-(Fe) Information

Help on Chemical  Formula: Chemical Formula: Fe++Ta2O6
Help on Composition: Composition: Molecular Weight = 513.74 gm
   Tantalum  70.44 %  Ta   86.02 % Ta2O5
   Iron      10.87 %  Fe   13.98 % FeO
   Oxygen    18.69 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+Ta2O6
Help on Environment: Environment: Accessory mineral in granite pegmatites.
Help on IMA Status: IMA Status: Approved IMA 1989
Help on Locality: Locality: Upper Bear Gulch, Lawrence Co, South Dakota, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the FERROus iron and from the Greek, Tantalos = father of Niobe.
Help on Synonym: Synonym: Coltan
  Ferrotantalite - Renamed to Tantalite-(Fe) by Mineralogical Record, v39 (2008), p 131