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Quadridavyne Mineral Data
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General Quadridavyne Information
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 Chemical Formula: |
(Na,K)6Ca2Al6Si6O24Cl4 |
| Composition: |
Molecular Weight = 1,103.19 gm |
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Potassium 4.96 % K 5.98 % K2O |
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Sodium 8.34 % Na 11.24 % Na2O |
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Calcium 7.99 % Ca 11.18 % CaO |
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Aluminum 14.67 % Al 27.73 % Al2O3 |
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Silicon 15.28 % Si 32.68 % SiO2 |
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Sulfur 0.58 % S 1.45 % SO3 |
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Chlorine 12.21 % Cl 12.21 % Cl |
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- %
Cl -2.76 % -O=Cl2 |
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Oxygen 35.97 % O |
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______ ______ |
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100.00 % 99.71 % = TOTAL OXIDE |
| Empirical Formula: |
Na4K1.4Ca2.2Al6Si6O24Cl3.8(SO4)0.2 |
| Environment: |
In volcanic ash from the 1906 eruption of Vesuvius. |
| IMA Status: |
Approved IMA 1994 |
| Locality: |
From Ottaviano, near Naples, Campania, Italy. Link to MinDat.org Location Data. |
| Name Origin: |
From the Latin "quad" for four, as the mineral has four times the unit cell volume of the related mineral species davyne. |
| Name Pronunciation: |
Quadridavyne + Pronunciation  |
| Synonym: |
ICSD 64812 |
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IMA1990-054 |
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PDF 46-1474 |
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