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Laumontite Mineral Data
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General Laumontite Information
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 Chemical Formula: |
CaAl2Si4O12•4(H2O) |
| Composition: |
Molecular Weight = 470.44 gm |
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Calcium 8.52 % Ca 11.92 % CaO |
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Aluminum 11.47 % Al 21.67 % Al2O3 |
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Silicon 23.88 % Si 51.09 % SiO2 |
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Hydrogen 1.71 % H 15.32 % H2O |
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Oxygen 54.42 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
CaAl2Si4O12•4(H2O) |
| Environment: |
Secondary mineral in basalts and andesites. Also occurs in metamorphic rocks and granites. Found in copper veins. |
| IMA Status: |
Valid Species (Pre-IMA) 1801 |
| Locality: |
Nagy-Ag, Transylvania of Romania. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the Frenchman, F. P. N. de Laumont (1747-1834). |
| Name Pronunciation: |
Laumontite + Pronunciation  |
| Synonym: |
Aedelforsite |
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Caporcianite |
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ICSD 72914 |
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Leonhardite |
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Lomonite |
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PDF 45-1325 |
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