Mineralogy Database

Eudialyte Mineral Data

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General Eudialyte Information

Help on Chemical  Formula: Chemical Formula: Na4(Ca,Ce)2(Fe++,Mn,Y)ZrSi8O22(OH,Cl)2 (?)
Help on Composition: Composition: Molecular Weight = 992.15 gm
   Sodium      9.27 %  Na   12.49 % Na2O
   Calcium     6.06 %  Ca    8.48 % CaO
   Cerium      7.06 %  Ce    8.27 % Ce2O3
   Yttrium     0.90 %  Y     1.14 % Y2O3
   Zirconium   9.19 %  Zr   12.42 % ZrO2
   Manganese   1.66 %  Mn    2.14 % MnO
   Iron        3.38 %  Fe    4.34 % FeO
   Silicon    22.65 %  Si   48.45 % SiO2
   Hydrogen    0.15 %  H     1.36 % H2O
   Chlorine    1.79 %  Cl    1.79 % Cl
                -   %   Cl   -0.40 % -O=Cl2   
   Oxygen     37.90 %  O
             ______        ______ 
             100.00 %      100.48 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na4Ca1.5Ce0.5Fe2+0.6Mn2+0.3Y0.1ZrSi8O22(OH)1.5Cl0.5
Help on Environment: Environment: Nepheline-syenite rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1801
Help on Locality: Locality: Julianehaab district of Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek eu - "well" and dialytos - "decomposable."
Help on Name Pronunciation: Name Pronunciation: Eudialyte + Pronunciation Say EUDIALYTE
Help on Synonym: Synonym: ICSD 68157
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