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Aluminoferrobarroisite Mineral Data
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General Aluminoferrobarroisite Information
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 Chemical Formula: |
[ ]CaNa(Fe2+)3Al2(Si7Al)O22(OH)2 |
| Composition: |
Molecular Weight = 894.15 gm |
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Sodium 2.57 % Na 3.47 % Na2O |
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Calcium 4.48 % Ca 6.27 % CaO |
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Aluminum 9.05 % Al 17.10 % Al2O3 |
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Iron 18.74 % Fe 24.11 % FeO |
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Silicon 21.99 % Si 47.04 % SiO2 |
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Hydrogen 0.23 % H 2.01 % H2O |
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Oxygen 42.94 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
CaNaFe2+3Al2(Si7AlO22)(OH)2 |
| IMA Status: |
Approved IMA 1997 (Dana # Added) |
| 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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