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Barrerite Mineral Data
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General Barrerite Information
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 Chemical Formula: |
(Na,K,Ca)2Al2Si7O18•6(H2O) |
| Composition: |
Molecular Weight = 2,680.57 gm |
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Potassium 1.55 % K 1.86 % K2O |
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Sodium 4.67 % Na 6.30 % Na2O |
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Calcium 1.26 % Ca 1.76 % CaO |
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Magnesium 0.15 % Mg 0.26 % MgO |
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Aluminum 8.24 % Al 15.58 % Al2O3 |
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Iron 0.02 % Fe 0.03 % FeO |
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Silicon 23.80 % Si 50.93 % SiO2 |
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Hydrogen 1.94 % H 17.33 % H2O |
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Oxygen 58.36 % O |
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______ ______ |
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100.00 % 94.03 % = TOTAL OXIDE |
| Empirical Formula: |
Na5.45K1.06Ca0.84Mg0.17Al8.19Fe2+0.01Si22.72O72�25.78(H2O) |
| Environment: |
On the walls of large fractures in deeply weathered andesitic and rhyolitic lavas. |
| IMA Status: |
Approved IMA 1974 |
| Locality: |
Found near Capo Pula, below South Efisio Tower, Nora, Sardinia, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
For Richard Maling Barrer (1910- ), New Zealand-born British teacher ad student of the chemistry of zeolites. |
| Name Pronunciation: |
Barrerite + Pronunciation  |
| Synonym: |
ICSD 4396 |
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PDF 29-1185 |
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