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Nontronite Mineral Data
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General Nontronite Information
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 Chemical Formula: |
Na0.3Fe+++2(Si,Al)4O10(OH)2•n(H2O) |
| Composition: |
Molecular Weight = 495.90 gm |
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Sodium 1.39 % Na 1.87 % Na2O |
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Aluminum 5.44 % Al 10.28 % Al2O3 |
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Iron 22.52 % Fe 32.20 % Fe2O3 |
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Silicon 16.99 % Si 36.35 % SiO2 |
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Hydrogen 2.03 % H 18.16 % H2O |
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Oxygen 51.62 % O |
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______ ______ |
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100.00 % 98.87 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.3Fe3+2Si3AlO10(OH)2•4(H2O) |
| IMA Status: |
Valid Species (Pre-IMA) 1827 |
| Locality: |
Nontrone, Dordogne, France. Link to MinDat.org Location Data. |
| Name Origin: |
Named after its locality. |
| Name Pronunciation: |
Nontronite + Pronunciation  |
| Synonym: |
Chloropal |
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ICSD 86916 |
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