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Petarasite Mineral Data
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General Petarasite Information
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 Chemical Formula: |
Na5Zr2Si6O18(Cl,OH)•2(H2O) |
| Composition: |
Molecular Weight = 832.99 gm |
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Sodium 12.97 % Na 17.49 % Na2O |
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Calcium 0.48 % Ca 0.67 % CaO |
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Zirconium 21.90 % Zr 29.59 % ZrO2 |
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Silicon 20.23 % Si 43.28 % SiO2 |
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Hydrogen 0.80 % H 7.14 % H2O |
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Chlorine 2.13 % Cl 2.13 % Cl |
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- %
Cl -0.48 % -O=Cl2 |
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Oxygen 41.49 % O |
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______ ______ |
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100.00 % 99.81 % = TOTAL OXIDE |
| Empirical Formula: |
Na4.7Ca0.1Zr2Si6O18(OH)0.6Cl0.5•3(H2O) |
| Environment: |
In a biotite-microcline xenolith and in pegmatitic veins in a nepheline syenite. |
| IMA Status: |
Approved IMA 1980 |
| Locality: |
Mont Saint-Hilaire, Quebec, Canada. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Peter Tarasoff, amateur mineralogist, Dollard-des-Ormeaux, Quebec, Canada. |
| Name Pronunciation: |
Petarasite + Pronunciation  |
| Synonym: |
ICSD 20150 |
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IMA1979-063 |
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PDF 33-1310 |
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