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Ferrikatophorite Mineral Data
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General Ferrikatophorite Information
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 Chemical Formula: |
Na2Ca(Fe++,Mg)4Fe+++(Si7Al)O22(OH)2 |
| Composition: |
Molecular Weight = 943.33 gm |
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Sodium 4.87 % Na 6.57 % Na2O |
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Calcium 4.25 % Ca 5.94 % CaO |
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Magnesium 2.58 % Mg 4.27 % MgO |
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Aluminum 2.86 % Al 5.40 % Al2O3 |
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Iron 23.68 % Fe 22.85 % FeO / 8.46 % Fe2O3 |
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Silicon 20.84 % Si 44.59 % SiO2 |
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Hydrogen 0.21 % H 1.91 % H2O |
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Oxygen 40.71 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na2CaFe2+3MgFe3+Si7AlO22(OH)2 |
| Environment: |
Phonolites and trachytes of the Rungwe Volcanics. Found in basic alkaline igneous rocks. |
| IMA Status: |
Approved IMA 1997 |
| Locality: |
Mariupol, Ukraine and Lake Nyasa, Tanzania. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its composition and from the Greek for "carrying down", in allusion to its volcanic origin. |
| Synonym: |
Cataphorite |
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