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Eudialyte Mineral Data
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General Eudialyte Information
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 Chemical Formula: |
Na4(Ca,Ce)2(Fe++,Mn,Y)ZrSi8O22(OH,Cl)2 (?) |
| Composition: |
Molecular Weight = 992.15 gm |
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Sodium 9.27 % Na 12.49 % Na2O |
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Calcium 6.06 % Ca 8.48 % CaO |
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Cerium 7.06 % Ce 8.27 % Ce2O3 |
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Yttrium 0.90 % Y 1.14 % Y2O3 |
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Zirconium 9.19 % Zr 12.42 % ZrO2 |
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Manganese 1.66 % Mn 2.14 % MnO |
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Iron 3.38 % Fe 4.34 % FeO |
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Silicon 22.65 % Si 48.45 % SiO2 |
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Hydrogen 0.15 % H 1.36 % H2O |
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Chlorine 1.79 % Cl 1.79 % Cl |
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- %
Cl -0.40 % -O=Cl2 |
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Oxygen 37.90 % O |
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______ ______ |
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100.00 % 100.48 % = TOTAL OXIDE |
| Empirical Formula: |
Na4Ca1.5Ce0.5Fe2+0.6Mn2+0.3Y0.1ZrSi8O22(OH)1.5Cl0.5 |
| Environment: |
Nepheline-syenite rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1801 |
| Locality: |
Julianehaab district of Greenland. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek eu - "well" and dialytos - "decomposable." |
| Name Pronunciation: |
Eudialyte + Pronunciation  |
| Synonym: |
ICSD 68157 |
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PDF 41-1465 |
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