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Pargasite Mineral Data
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General Pargasite Information
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 Chemical Formula: |
NaCa2(Mg,Fe++)4Al(Si6Al2)O22(OH)2 |
| Composition: |
Molecular Weight = 867.37 gm |
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Sodium 2.65 % Na 3.57 % Na2O |
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Calcium 9.24 % Ca 12.93 % CaO |
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Magnesium 8.41 % Mg 13.94 % MgO |
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Aluminum 9.33 % Al 17.63 % Al2O3 |
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Iron 6.44 % Fe 8.28 % FeO |
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Silicon 19.43 % Si 41.56 % SiO2 |
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Hydrogen 0.23 % H 2.08 % H2O |
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Oxygen 44.27 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
NaCa2Mg3Fe2+Si6Al3O22(OH)2 |
| IMA Status: |
Valid Species (Pre-IMA) 1814 |
| Locality: |
Pargas, Finland. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Name Pronunciation: |
Pargasite + Pronunciation  |
| Synonym: |
ICSD 79836 |
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PDF 41-1430 |
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