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Dachiardite-Na Mineral Data
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General Dachiardite-Na Information
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 Chemical Formula: |
(Na2,Ca,K2)4Al4Si20O48•13(H2O) |
| Composition: |
Molecular Weight = 1,808.84 gm |
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Potassium 1.53 % K 1.85 % K2O |
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Barium 0.08 % Ba 0.08 % BaO |
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Sodium 3.29 % Na 4.44 % Na2O |
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Calcium 1.17 % Ca 1.64 % CaO |
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Magnesium 0.05 % Mg 0.09 % MgO |
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Aluminum 7.25 % Al 13.70 % Al2O3 |
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Iron 0.34 % Fe 0.49 % Fe2O3 |
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Silicon 30.45 % Si 65.14 % SiO2 |
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Hydrogen 1.50 % H 13.38 % H2O |
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Oxygen 54.34 % O |
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______ ______ |
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100.00 % 100.80 % = TOTAL OXIDE |
| Empirical Formula: |
Na2.59Ca0.53K0.71Mg0.04Ba0.01Al4.86Fe3+0.11Si19.61O48�13.43(H2O) |
| Environment: |
Secondary mineral hydrothermally altered from calc-alkalic to alkalic volcanic and plutonic rocks. |
| IMA Status: |
Approved IMA 1977 |
| Locality: |
From La Pallaccia and Orli di Fassa, Alpe di Siusi, Trentoin-Alto Adige, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
Named for its relationship to dachiardite and the sodium content. |
| Name Pronunciation: |
Dachiardite-Na + Pronunciation  |
| Synonym: |
Achiardite |
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Sodiumdachiardite - renamed Dachiardite-Na |
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Svetlozarite - twinned |
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