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Armangite Mineral Data
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General Armangite Information
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 Chemical Formula: |
Mn26As+++18O50(OH)4(CO3) |
| Composition: |
Molecular Weight = 3,704.99 gm |
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Manganese 38.55 % Mn 49.78 % MnO |
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Arsenic 36.40 % As 48.06 % As2O3 |
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Hydrogen 0.11 % H 0.97 % H2O |
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Carbon 0.32 % C 1.19 % CO2 |
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Oxygen 24.61 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Mn2+26As18O50(OH)4(CO3) |
| Environment: |
On a museum specimen collected from a metamorphosed Fe-Mn deposit. |
| IMA Status: |
Valid Species (Pre-IMA) 1920 |
| Locality: |
Langban, V�armland, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named for Arsenic and MANGanese in the composition. |
| Name Pronunciation: |
Armangite + Pronunciation  |
| Synonym: |
ICSD 100555 |
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PDF 19-780 |
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