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Prehnite Mineral Data
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General Prehnite Information
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 Chemical Formula: |
Ca2Al2Si3O10(OH)2 |
| Composition: |
Molecular Weight = 395.38 gm |
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Calcium 20.27 % Ca 28.37 % CaO |
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Aluminum 13.65 % Al 25.79 % Al2O3 |
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Silicon 21.31 % Si 45.59 % SiO2 |
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Hydrogen 0.25 % H 2.28 % H2O |
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Oxygen 44.51 % O |
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______ ______ |
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100.00 % 102.02 % = TOTAL OXIDE |
| Empirical Formula: |
Ca2Al2Si3O10(OH) |
| Environment: |
Hydrothermally altered rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1789 |
| Locality: |
Haslach, Harzburg and Oberstein, Germany. Link to MinDat.org Location Data. |
| Name Origin: |
Named after the Dutch Colonel, H. Von Prehn (1733-1785). |
| Name Pronunciation: |
Prehnite  |
| Synonym: |
ICSD 69402 |
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PDF 29-290 |
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