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Katophorite Mineral Data
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General Katophorite Information
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 Chemical Formula: |
Na(CaNa)Fe++4(Al,Fe+++)Si7AlO22(OH)2 |
| Composition: |
Molecular Weight = 939.86 gm |
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Potassium 1.25 % K 1.50 % K2O |
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Sodium 2.94 % Na 3.96 % Na2O |
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Calcium 5.54 % Ca 7.76 % CaO |
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Magnesium 3.88 % Mg 6.43 % MgO |
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Titanium 1.02 % Ti 1.70 % TiO2 |
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Manganese 1.17 % Mn 1.51 % MnO |
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Aluminum 2.01 % Al 3.80 % Al2O3 |
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Iron 19.31 % Fe 24.84 % FeO |
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Silicon 21.81 % Si 46.67 % SiO2 |
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Hydrogen 0.21 % H 1.92 % H2O |
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Oxygen 40.86 % O |
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______ ______ |
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100.00 % 100.09 % = TOTAL OXIDE |
| Empirical Formula: |
Na1.2K0.3Ca1.3Fe2+3.25Mg1.5Ti0.2Mn2+0.2Al0.7Si7.3O22(OH)2 |
| Environment: |
Found in basic alkaline igneous rocks and in blueschist facies jadeitites. Forms a series with magnesiokatophorite. |
| IMA Status: |
Valid Species (Pre-IMA) 1894 |
| Locality: |
La Tabatiere, PQ, Canada and the Christiania region, Norway. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for "carrying down", in allusion to its volcanic origin. |
| Name Pronunciation: |
Katophorite + Pronunciation  |
| Synonym: |
Aluminokatophorite |
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Catophorite |
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ICSD 64886 |
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PDF 85-1481 |
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