Mineralogy Database

Raslakite Mineral Data

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General Raslakite Information

Help on Chemical  Formula: Chemical Formula: Na15Ca3Fe3(Na,Zr)3Zr3(Si,Nb)(Si25O73)(OH,H2O)3(Cl,OH)
Help on Composition: Composition: Molecular Weight = 2,774.01 gm
   Sodium     15.03 %  Na   20.25 % Na2O
   Calcium     4.48 %  Ca    6.27 % CaO
   Zirconium   2.47 %  Zr    3.33 % ZrO2
   Niobium     0.84 %  Nb    1.20 % Nb2O5
   Iron        6.04 %  Fe    7.77 % FeO
   Silicon    26.07 %  Si   55.77 % SiO2
   Hydrogen    0.15 %  H     1.30 % H2O
   Chlorine    0.96 %  Cl    0.96 % Cl
                -   %   Cl   -0.22 % -O=Cl2   
   Oxygen     43.98 %  O
             ______        ______ 
             100.00 %       96.63 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na15.88Ca3.1Fe2+3Na2.25Zr0.75Si0.75Nb0.25Si25O73(OH)2.25(H2O)0.75Cl0.75(OH)0.25
Help on Environment: Environment: Found in perialkaline pegmatites. Eudialyte group; structure determined
Help on IMA Status: IMA Status: Approved IMA 2003 (Dana # Added)
Help on Locality: Locality: Mount Karnasurt, Lovozwro alkaline massif, Kola Peninsula, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after the Raslak cirques near Mount Kedykverpakhk.
Help on Synonym: Synonym: IMA2002-067