Mineralogy Database

Lemmleinite-Ba Mineral Data

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General Lemmleinite-Ba Information

Help on Chemical  Formula: Chemical Formula: Na2K2Ba1-xTi4(Si4O12)2(O,OH)4•5(H2O)
Help on Composition: Composition: Molecular Weight = 2,498.97 gm
   Potassium   5.79 %  K     6.97 % K2O
   Barium     11.54 %  Ba   12.88 % BaO
   Sodium      3.96 %  Na    5.33 % Na2O
   Magnesium   0.19 %  Mg    0.32 % MgO
   Titanium   15.14 %  Ti   25.25 % TiO2
   Manganese   1.32 %  Mn    1.70 % MnO
   Niobium     0.37 %  Nb    0.53 % Nb2O5
   Iron        0.22 %  Fe    0.29 % FeO
   Silicon    17.98 %  Si   38.47 % SiO2
   Hydrogen    0.91 %  H     8.15 % H2O
   Oxygen     42.58 %  O
             ______        ______ 
             100.00 %       99.90 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4.3K3.7Ba2.1Mn2+0.6Mg0.2Fe2+0.1Ti7.9Nb0.1(Si4O12)4O6.4(OH)1.6�10.5(H2O)
Help on Environment: Environment: Alkaline pegmatites. Labuntsovite group, structure
Help on IMA Status: IMA Status: Approved IMA 1998 (Dana # Added)
Help on Locality: Locality: Kukisvumchorr Mt, Khibiny massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named as the Ba-dominant member of the lemmleinite subgroup.
Help on Synonym: Synonym: IMA1998-052a