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Actinolite Mineral Data
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General Actinolite Information
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 Chemical Formula: |
Ca2(Mg,Fe++)5Si8O22(OH)2 |
| Composition: |
Molecular Weight = 853.16 gm |
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Sodium 0.59 % Na 0.80 % Na2O |
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Calcium 8.60 % Ca 12.03 % CaO |
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Magnesium 9.71 % Mg 16.11 % MgO |
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Titanium 0.11 % Ti 0.19 % TiO2 |
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Manganese 0.13 % Mn 0.17 % MnO |
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Aluminum 1.39 % Al 2.63 % Al2O3 |
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Iron 8.58 % Fe 10.61 % FeO / 0.47 % Fe2O3 |
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Silicon 25.64 % Si 54.86 % SiO2 |
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Hydrogen 0.24 % H 2.11 % H2O |
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Oxygen 45.01 % O |
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______ ______ |
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100.00 % 99.97 % = TOTAL OXIDE |
| Empirical Formula: |
Ca1.83Na0.22Mg3.41Fe2+1.26Al0.23Fe3+0.05Mn2+0.02Ti0.02Si7.79Al0.21O22(OH)2 |
| Environment: |
Metamorphic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1794 |
| Locality: |
Common world wide. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek, aktinos, meaning "ray" in allusion to actinolite's fibrous nature. |
| Name Pronunciation: |
Actinolite + Pronunciation  |
| Synonym: |
Byssolite |
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Hexagonite (Mn) |
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ICSD 24900 |
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Mountain Leather |
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Nephrite Jade |
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PDF 41-1366 |
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Smaragdite - emerald green |
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