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Ferroferritschermakite Mineral Data
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General Ferroferritschermakite Information
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 Chemical Formula: |
Ca2(Fe++,Mg)3Fe+++2(Si7Al)O22(OH)2 |
| Composition: |
Molecular Weight = 937.43 gm |
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Calcium 8.55 % Ca 11.96 % CaO |
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Magnesium 2.59 % Mg 4.30 % MgO |
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Aluminum 2.88 % Al 5.44 % Al2O3 |
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Iron 23.83 % Fe 15.33 % FeO / 17.04 % Fe2O3 |
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Silicon 20.97 % Si 44.87 % SiO2 |
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Hydrogen 0.22 % H 1.92 % H2O |
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Oxygen 40.96 % O |
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______ ______ |
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100.00 % 100.85 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2Fe2+2MgFe3+2Si7AlO22(OH)2 |
| IMA Status: |
Not Approved IMA 1997 |
| Locality: |
Link to MinDat.org Location Data. |
| Name Origin: |
Named for its composition and for Gustav Tschermak von Sessenegg (1836-1927), Austrian mineralogist. |
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