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Magnesiokatophorite Mineral Data
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General Magnesiokatophorite Information
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 Chemical Formula: |
Na(CaNa)Mg4AlSi7AlO22(OH)2 |
| Composition: |
Molecular Weight = 819.84 gm |
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Sodium 5.61 % Na 7.56 % Na2O |
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Calcium 4.89 % Ca 6.84 % CaO |
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Magnesium 11.86 % Mg 19.66 % MgO |
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Aluminum 6.58 % Al 12.44 % Al2O3 |
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Silicon 23.98 % Si 51.30 % SiO2 |
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Hydrogen 0.25 % H 2.20 % H2O |
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Oxygen 46.84 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na2CaMg4Al2Si7O22(OH)2 |
| Environment: |
Forms rims on aegirine as the last Fe-Mg mineral to crystallize. Found in basic alkaline igneous rocks. |
| IMA Status: |
Approved IMA 1997 |
| Locality: |
Shields River basin, Montana, USA. 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: |
Catophorite |
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Magnesio-aluminokatophorite |
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