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Natroalunite Mineral Data
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General Natroalunite Information
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 Chemical Formula: |
NaAl3(SO4)2(OH)6 |
| Composition: |
Molecular Weight = 398.11 gm |
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Sodium 5.77 % Na 7.78 % Na2O |
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Aluminum 20.33 % Al 38.42 % Al2O3 |
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Hydrogen 1.52 % H 13.58 % H2O |
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Sulfur 16.11 % S 40.22 % SO3 |
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Oxygen 56.26 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
NaAl3(SO4)2(OH)6 |
| Environment: |
Formed by solfataric or hydrothermal sulfate-bearing solutions reacting with clays. |
| IMA Status: |
Valid Species (Pre-IMA) 1911 |
| Locality: |
National Belle mine, Colorado, USA Link to MinDat.org Location Data. |
| Name Origin: |
Named as the sodium, natrium, analog of alunite. |
| Synonym: |
ICSD 31244 |
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Natro-alunite - Renamed Natroalunite by Mineralogical Record, v39 (2008), p131 |
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PDF 41-1467 |
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