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Thaumasite Mineral Data
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General Thaumasite Information
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 Chemical Formula: |
Ca3Si(CO3)(SO4)(OH)6•12(H2O) |
| Composition: |
Molecular Weight = 622.62 gm |
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Calcium 19.31 % Ca 27.02 % CaO |
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Silicon 4.51 % Si 9.65 % SiO2 |
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Hydrogen 4.86 % H 43.40 % H2O |
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Carbon 1.93 % C 7.07 % CO2 |
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Sulfur 5.15 % S 12.86 % SO3 |
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Oxygen 64.24 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca3Si(CO3)(SO4)(OH)6•12(H2O) |
| IMA Status: |
Valid Species (Pre-IMA) 1878 |
| Locality: |
Bjelke mine, near Areskutan, Jamtland, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
From the Greek thaumasion - "surprising" in allusion to the chemical composition. |
| Name Pronunciation: |
Thaumasite + Pronunciation  |
| Synonym: |
ICSD 31247 |
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PDF 25-128 |
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