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Andradite Mineral Data
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General Andradite Information
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 Chemical Formula: |
Ca3Fe+++2(SiO4)3 |
| Composition: |
Molecular Weight = 508.18 gm |
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Calcium 23.66 % Ca 33.11 % CaO |
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Iron 21.98 % Fe 28.28 % FeO |
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Silicon 16.58 % Si 35.47 % SiO2 |
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Oxygen 37.78 % O |
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______ ______ |
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100.00 % 96.85 % = TOTAL OXIDE |
| Empirical Formula: |
Ca3Fe2+2(SiO4)3 |
| Environment: |
Igneous and metamorphic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1868 |
| Locality: |
Magnet Cove, Arkansas. Link to MinDat.org Location Data. |
| Name Origin: |
Andradite is named after the Brazilian mineralogist J. B. de Andrada e Silva (1763-1838). Demantoid is named after its adamantine luster. |
| Name Pronunciation: |
Andradite + Pronunciation  |
| Synonym: |
Demantoid - green |
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ICSD 27370 |
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Melanite - black |
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PDF 10-288 |
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Topazolite - yellow |
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