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Epidote Mineral Data
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General Epidote Information
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 Chemical Formula: |
Ca2(Fe+++,Al)3(SiO4)3(OH) = Ca2(Fe,Al)Al2(SiO4)(Si2O7)O(OH) |
| Composition: |
Molecular Weight = 519.30 gm |
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Calcium 15.44 % Ca 21.60 % CaO |
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Aluminum 3.90 % Al 7.36 % Al2O3 |
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Iron 24.20 % Fe 34.60 % Fe2O3 |
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Silicon 16.22 % Si 34.71 % SiO2 |
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Hydrogen 0.19 % H 1.73 % H2O |
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Oxygen 40.05 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2Fe3+2.25Al0.75(SiO4)3(OH) |
| Environment: |
Contact metamorphic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1801 - Dana # Changed from 58.2.1a.7 |
| Locality: |
Common world wide. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek epidosis - "addition." |
| Name Pronunciation: |
Epidote  |
| Synonym: |
ICSD 10268 |
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PDF 45-1446 |
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Pistacite - pistachio green |
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