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Ferrobarroisite Mineral Data
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General Ferrobarroisite Information
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 Chemical Formula: |
[ ](CaNa)Fe++3AlFe+++Si7AlO22(OH)2 |
| Composition: |
Molecular Weight = 923.02 gm |
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Sodium 2.49 % Na 3.36 % Na2O |
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Calcium 4.34 % Ca 6.08 % CaO |
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Aluminum 5.85 % Al 11.05 % Al2O3 |
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Iron 24.20 % Fe 23.35 % FeO / 8.65 % Fe2O3 |
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Silicon 21.30 % Si 45.57 % SiO2 |
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Hydrogen 0.22 % H 1.95 % H2O |
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Oxygen 41.60 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
CaNaFe2+3AlFe3+(Si7AlO22)(OH)2 |
| IMA Status: |
Approved IMA 1978 |
| 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). |
| Name Pronunciation: |
Ferrobarroisite  |
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