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Romanechite Mineral Data
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General Romanechite Information
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 Chemical Formula: |
(Ba,H2O)2(Mn++++,Mn+++)5O10 |
| Composition: |
Molecular Weight = 544.25 gm |
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Barium 17.66 % Ba 19.72 % BaO |
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Manganese 48.45 % Mn 69.62 % Mn2O3 |
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Silicon 0.52 % Si 1.10 % SiO2 |
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Hydrogen 0.44 % H 3.97 % H2O |
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Oxygen 32.92 % O |
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______ ______ |
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100.00 % 94.41 % = TOTAL OXIDE |
| Empirical Formula: |
Ba0.7Mn3+4.8Si0.1O10•1.2(H2O) |
| Environment: |
Weathering product of manganese-bearing oxides, carbonates, and silicates in sedimentary deposits. |
| IMA Status: |
Valid Species (Pre-IMA) 1910 |
| Locality: |
Romaneche, Saone-et-Loire, France. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Romanechite + Pronunciation  |
| Synonym: |
Psilomelane |
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