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Ganterite Mineral Data
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General Ganterite Information
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 Chemical Formula: |
[Ba0.5(Na,K)0.5]Al2(Si2.5Al1.5O10)(OH)2 |
| Composition: |
Molecular Weight = 438.39 gm |
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Potassium 2.50 % K 3.01 % K2O |
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Barium 13.78 % Ba 15.39 % BaO |
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Sodium 1.42 % Na 1.91 % Na2O |
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Magnesium 0.50 % Mg 0.83 % MgO |
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Titanium 0.44 % Ti 0.73 % TiO2 |
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Aluminum 19.20 % Al 36.28 % Al2O3 |
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Iron 0.51 % Fe 0.66 % FeO |
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Silicon 17.43 % Si 37.28 % SiO2 |
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Hydrogen 0.43 % H 3.88 % H2O |
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Oxygen 43.80 % O |
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______ ______ |
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100.00 % 99.96 % = TOTAL OXIDE |
| Empirical Formula: |
Ba0.44K0.28Na0.27Al1.84Mg0.09Fe2+0.04Ti0.04Si2.72Al1.28O10.11(OH)1.89 |
| Environment: |
Rock-forming mica found in bands and lenses of white-mica schist, and in a leucocratic zoisite-celsian gneiss. Ba-dominant muscovite. |
| IMA Status: |
Approved IMA 2003 (Dana # Added) |
| Locality: |
Berisal Complex, Simplon, Switzerland. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Gantertal Valley region in which the mineral was found. |
| Synonym: |
IMA2000-033 |
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Oellacherite |
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Sandbergite |
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