Mineralogy Database

Tantalite-(Mg) Mineral Data

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General Tantalite-(Mg) Information

Help on Chemical Formula: Chemical Formula: (Mg,Fe)(Ta,Nb)2O6
Help on Composition: Composition: Molecular Weight = 425.25 gm
   Magnesium   3.20 %  Mg    5.31 % MgO
   Tantalum   51.06 %  Ta   62.35 % Ta2O5
   Titanium    0.23 %  Ti    0.38 % TiO2
   Manganese   0.65 %  Mn    0.83 % MnO
   Niobium    17.04 %  Nb   24.38 % Nb2O5
   Iron        5.25 %  Fe    6.76 % FeO
   Oxygen     22.57 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mg0.56Fe2+0.4Mn2+0.05Ta1.2Nb0.78Ti0.02O6
Help on Environment: Environment: Intergrown with ferrotantalie, ferrocolumbite as replacement rims on manganotantilite crystals in a de-silicified granitic pegmatite. Columbite-tantalite group.
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Lipovka pegmatite field, Rezh district, Central Urals, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the magnesium-dominant member of the tantalite series.
Help on Synonym: Synonym: IMA2002-018
  Magnesiotantalite - Renamed to Tantalite-(Mg) by Mineralogical Record, v39 (2008), p 131