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Rancieite Mineral Data
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General Rancieite Information
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 Chemical Formula: |
(Ca,Mn++)Mn++++4O9•3(H2O) |
| Composition: |
Molecular Weight = 461.59 gm |
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Calcium 6.51 % Ca 9.11 % CaO |
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Manganese 50.58 % Mn 3.84 % MnO / 75.34 % MnO2 |
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Hydrogen 1.31 % H 11.71 % H2O |
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Oxygen 41.59 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Ca0.75Mn2+0.25Mn4+4O9•3(H2O) |
| Environment: |
In cavities in limonite. |
| IMA Status: |
Valid Species (Pre-IMA) 1859 |
| Locality: |
Rancie, near Vicdessos, Ariege, France. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the locality. |
| Name Pronunciation: |
Rancieite + Pronunciation  |
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