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Braunite-II Mineral Data
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General Braunite-II Information
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 Chemical Formula: |
Mn++Mn+++6SiO12 |
| Composition: |
Molecular Weight = 604.64 gm |
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Manganese 63.60 % Mn 11.73 % MnO / 78.33 % Mn2O3 |
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Silicon 4.64 % Si 9.94 % SiO2 |
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Oxygen 31.75 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+Mn3+6SiO12 |
| Environment: |
Manganese oxide mineral deposits. Metamorphic and secondary weathering environments |
| IMA Status: |
Not Approved IMA 1967 |
| Locality: |
Metamorphic, hydrothermal, and sedimentary rocks. Link to MinDat.org Location Data. |
| Name Origin: |
Named after K. Braun (1790-1872) from Gotha, Germany. |
| Name Pronunciation: |
Braunite-II  |
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