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Bariumbannisterite Mineral Data
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General Bariumbannisterite Information
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 Chemical Formula: |
(K,H3O)(Ba,Ca)(Mn++,Fe++,Mg)21(Si,Al)32O80(O,OH)16•4-12(H2O) |
| Composition: |
Molecular Weight = 3,648.84 gm |
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Potassium 0.80 % K 0.97 % K2O |
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Barium 2.82 % Ba 3.15 % BaO |
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Calcium 0.27 % Ca 0.38 % CaO |
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Magnesium 2.00 % Mg 3.31 % MgO |
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Manganese 21.08 % Mn 27.22 % MnO |
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Aluminum 2.96 % Al 5.59 % Al2O3 |
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Iron 6.12 % Fe 7.88 % FeO |
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Silicon 21.55 % Si 46.11 % SiO2 |
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Hydrogen 0.19 % H 1.67 % H2O |
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Oxygen 42.20 % O |
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______ ______ |
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100.00 % 96.27 % = TOTAL OXIDE |
| Empirical Formula: |
K0.75(H3O)0.25Ba0.75Ca0.25Mn2+14Fe2+4Mg3Si28Al4O90(OH)6 |
| IMA Status: |
Not Approved IMA |
| Locality: |
Link to MinDat.org Location Data. |
| Name Origin: |
Named as the barium analog of bannisterite. |
| Synonym: |
Bannisterite - Barium rich |
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