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Paragonite Mineral Data
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General Paragonite Information
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 Chemical Formula: |
NaAl2(Si3Al)O10(OH)2 |
| Composition: |
Molecular Weight = 382.20 gm |
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Sodium 6.02 % Na 8.11 % Na2O |
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Aluminum 21.18 % Al 40.02 % Al2O3 |
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Silicon 22.05 % Si 47.16 % SiO2 |
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Hydrogen 0.53 % H 4.71 % H2O |
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Oxygen 50.23 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
NaAl3Si3O10(OH)2 |
| Environment: |
Metamorphic mineral formed in schists and gneisses under a broad range of P-T conditions. Commonly mistaken for "sericite". |
| IMA Status: |
Valid Species (Pre-IMA) 1843 |
| Locality: |
Mte. Campione, Tessin, Switzerland. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for "to mislead", in allusion to its originally having been mistaken for talc. |
| Name Pronunciation: |
Paragonite + Pronunciation  |
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