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Fayalite Mineral Data
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General Fayalite Information
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 Chemical Formula: |
Fe++2SiO4 |
| Composition: |
Molecular Weight = 203.78 gm |
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Iron 54.81 % Fe 70.51 % FeO |
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Silicon 13.78 % Si 29.49 % SiO2 |
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Oxygen 31.41 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Fe2+2(SiO4) |
| Environment: |
Ultra mafic silica-poor igneous rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1840 |
| Locality: |
Fayal Island, Azores Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality |
| Name Pronunciation: |
Fayalite  |
| Synonym: |
Hortonolite - Mn,Mg |
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ICSD 26375 |
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Knebelite(Mn) |
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PDF 31-633 |
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