General Phillipsite-Na Information
|
 Chemical Formula: |
(Na,K,Ca)1-2(Si,Al)8O16•6(H2O) |
| Composition: |
Molecular Weight = 649.86 gm |
| |
Potassium 3.61 % K 4.35 % K2O |
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Sodium 3.18 % Na 4.29 % Na2O |
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Calcium 3.08 % Ca 4.31 % CaO |
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Aluminum 11.63 % Al 21.97 % Al2O3 |
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Silicon 22.47 % Si 48.08 % SiO2 |
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Hydrogen 1.86 % H 16.63 % H2O |
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Oxygen 54.16 % O |
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______ ______ |
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100.00 % 99.63 % = TOTAL OXIDE |
| Empirical Formula: |
Na0.9Ca0.5K0.6Si5.2Al2.8O16•6(H2O) |
| Environment: |
Common zeolite in volcanic rocks, ore veins, diagenetically altered rhyolitic vitric tuffs, saline lake deposits, and ocean floor sediments. |
| IMA Status: |
Valid Species (Pre-IMA) 1825 |
| Locality: |
Aci Castello, on the slopes of Mount Etna, Sicily, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named after William Phillips (1775-1829), English mineralogist and founder of the Geological Society of London. Na modifier added by zeolite nomenclature committee. |
| Name Pronunciation: |
Phillipsite-Na + Pronunciation  |
| Synonym: |
Abrazite |
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Cross stone |
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Phillipsite |
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