Mineralogy Database

Betafite Mineral Data

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General Betafite Information

Help on Chemical Formula: Chemical Formula: (Ca,U)2(Ti,Nb,Ta)2O6(OH)
Help on Composition: Composition: Molecular Weight = 415.12 gm
   Calcium    1.93 %  Ca    2.70 % CaO
   Uranium   17.20 %  U    20.67 % UO3
   Tantalum  21.79 %  Ta   26.61 % Ta2O5
   Titanium   9.23 %  Ti   15.39 % TiO2
   Niobium   20.14 %  Nb   28.81 % Nb2O5
   Aluminum   0.65 %  Al    1.23 % Al2O3
   Iron       1.35 %  Fe    1.92 % Fe2O3
   Hydrogen   0.73 %  H     6.51 % H2O
   Oxygen    26.98 %  O
            ______        ______ 
            100.00 %      103.85 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: U0.3Ca0.2Nb0.9Ti0.8Al0.1Fe3+0.1Ta0.5O4(OH)3
Help on Environment: Environment: Typically a primary mineral in granite pegmatites, rare in carbonatites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1912
Help on Locality: Locality: Betafo, Malagasy Republic. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Betafite Say BETAFITE
Help on Synonym: Synonym: Blomstrandite
  Mendeleyevite
  Samiresite