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Ferroferribarroisite Mineral Data
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General Ferroferribarroisite Information
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 Chemical Formula: |
CaNa(Fe++,Mg)3Fe+++2[AlSi7O22](OH)2 |
| Composition: |
Molecular Weight = 928.23 gm |
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Sodium 2.48 % Na 3.34 % Na2O |
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Calcium 4.32 % Ca 6.04 % CaO |
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Magnesium 1.96 % Mg 3.26 % MgO |
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Aluminum 2.91 % Al 5.49 % Al2O3 |
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Iron 25.57 % Fe 17.42 % FeO / 17.20 % Fe2O3 |
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Silicon 21.18 % Si 45.31 % SiO2 |
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Hydrogen 0.22 % H 1.94 % H2O |
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Oxygen 41.37 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
CaNaFe2+2.25Mg0.75Fe3+2(Si7AlO22)(OH)2 |
| IMA Status: |
Not Approved IMA |
| Locality: |
Link to MinDat.org Location Data. |
| Name Origin: |
Named as per current IMA amphibole nomenclature (Burke and Leake 2004; Can. Mineral., 42, 1881-1883). |
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