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Orthochevkinite Mineral Data
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General Orthochevkinite Information
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 Chemical Formula: |
(Ce,La,Ca,Na,Th)4(Fe++,Mg)2(Ti,Fe+++)3Si4O22 |
| Composition: |
Molecular Weight = 1,170.75 gm |
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Sodium 0.79 % Na 1.06 % Na2O |
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Calcium 2.05 % Ca 2.87 % CaO |
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Lanthanum 14.24 % La 16.70 % La2O3 |
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Cerium 14.36 % Ce 16.82 % Ce2O3 |
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Thorium 7.93 % Th 9.02 % ThO2 |
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Magnesium 1.04 % Mg 1.72 % MgO |
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Titanium 9.20 % Ti 15.35 % TiO2 |
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Iron 10.73 % Fe 9.21 % FeO / 5.12 % Fe2O3 |
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Silicon 9.60 % Si 20.53 % SiO2 |
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Oxygen 30.07 % O |
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______ ______ |
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100.00 % 98.39 % = TOTAL OXIDE |
| Empirical Formula: |
Ce1.2La1.2Ca0.6Na0.4Th0.4Fe2+1.5Mg0.5Ti2.25Fe3+0.75Si4O22 |
| Environment: |
Alkaline syenite pegmatites. An incompletely characterized material. Physical properties by analogy with chevkinite. |
| IMA Status: |
Not Approved IMA 1920 |
| Locality: |
Ifazina-Itorendrika Link to MinDat.org Location Data. |
| Name Origin: |
Named as a possible orthorhombic form of chevkinite. |
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