Mineralogy Database

Dualite Mineral Data

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General Dualite Information

Help on Chemical Formula: Chemical Formula: Na30(Ca,Na,Ce,Sr)12(Na,Mn,Fe,Ti)6Zr3Ti3MnSi51O144(OH,H2O,Cl)9
Help on Composition: Composition: Molecular Weight = 5,953.87 gm
   Potassium         0.07 %  K     0.08 % K2O
   Barium            0.23 %  Ba    0.26 % BaO
   Sodium           13.20 %  Na   17.80 % Na2O
   Strontium         1.16 %  Sr    1.37 % SrO
   Calcium           5.76 %  Ca    8.05 % CaO
   La,Ce,Pr,Nd,Sm,   3.07 %  RE    3.58 % REE2O3
   Zirconium         4.00 %  Zr    5.40 % ZrO2
   Titanium          2.65 %  Ti    4.41 % TiO2
   Manganese         2.00 %  Mn    2.59 % MnO
   Niobium           1.36 %  Nb    1.94 % Nb2O5
   Aluminum          0.10 %  Al    0.20 % Al2O3
   Iron              0.82 %  Fe    1.05 % FeO
   Silicon          24.03 %  Si   51.42 % SiO2
   Hydrogen          0.16 %  H     1.39 % H2O
   Chlorine          0.58 %  Cl    0.58 % Cl
                      -   %   Cl   -0.13 % -O=Cl2   
   Oxygen           40.81 %  O
                   ______        ______ 
                   100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na29.79Ba0.1K0.1Ca8.55Na1.39REE1.27Sr0.79Na3.01Mn2+1.35Fe2+0.87Ti0.77Zr2.61Nb0.39 Ti2.52Nb0.48Mn2+0.82Si0.18Si50.77Cl0.98
Help on Environment: Environment: Found as sporadic, irregularly shaped grains up to 0.3-0.5 mm across in a peralkaline pegmatoid. Eudialyte group.
Help on IMA Status: IMA Status: Approved IMA 2005 (Dana # Added)
Help on Locality: Locality: Mt. Alluaiv, Lovozero alkaline massif, Kola Peninsula, Russia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name is derived from Latin dualis (dual) alluding to the dual taxonomic membership of this mineral, which is at the same time zirconosilicate and titanosilicate.
Help on Synonym: Synonym: IMA2005-019