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Potassicsadanagaite Mineral Data
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General Potassicsadanagaite Information
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 Chemical Formula: |
(K,Na)Ca2[Fe++3(Al,Fe+++)2][Si5Al3O22](OH)2 |
| Composition: |
Molecular Weight = 966.86 gm |
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Potassium 3.03 % K 3.65 % K2O |
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Sodium 0.59 % Na 0.80 % Na2O |
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Calcium 8.29 % Ca 11.60 % CaO |
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Aluminum 9.07 % Al 17.14 % Al2O3 |
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Iron 21.66 % Fe 22.29 % FeO / 6.19 % Fe2O3 |
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Silicon 17.43 % Si 37.29 % SiO2 |
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Hydrogen 0.21 % H 1.86 % H2O |
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Oxygen 39.71 % O |
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______ ______ |
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100.00 % 100.83 % = TOTAL OXIDE |
| Empirical Formula: |
K0.75Na0.25Ca2Fe2+3Al1.25Fe3+0.75(Si6Al2O22)(OH)2 |
| IMA Status: |
Approved IMA 1997 (Dana # Added) |
| Locality: |
Link to MinDat.org Location Data. |
| Name Origin: |
Named for the composition and for Ryoichi Sadanaga (1920-), professor emeritus, University of Tokyo. |
| Synonym: |
Sadanagaite-K |
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