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Thornasite Mineral Data
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General Thornasite Information
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 Chemical Formula: |
Na12Th3[Si8O19]4•18(H2O) |
| Composition: |
Molecular Weight = 3,410.96 gm |
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Sodium 8.09 % Na 10.90 % Na2O |
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Thorium 20.41 % Th 23.22 % ThO2 |
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Silicon 26.35 % Si 56.37 % SiO2 |
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Hydrogen 1.06 % H 9.51 % H2O |
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Oxygen 44.09 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Na12Th3(Si8O19)4•18(H2O) |
| IMA Status: |
Approved IMA 1987 |
| Locality: |
DeMix quarry, Mt. St. Hilaire, Quebec, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its composition (Thorium, Na, Si). |
| Name Pronunciation: |
Thornasite + Pronunciation  |
| Synonym: |
ICSD 89792 |
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IMA1985-050 |
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PDF 40-506 |
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