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Ecdemite Mineral Data
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General Ecdemite Information
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 Chemical Formula: |
Pb6As+++2O7Cl4 |
| Composition: |
Molecular Weight = 1,646.85 gm |
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Arsenic 9.10 % As 12.01 % As2O3 |
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Lead 75.49 % Pb 81.32 % PbO |
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Chlorine 8.61 % Cl 8.61 % Cl |
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- %
Cl -1.94 % -O=Cl2 |
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Oxygen 6.80 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
| Empirical Formula: |
Pb6As2O7Cl4 |
| IMA Status: |
Valid Species (Pre-IMA) 1877 |
| Locality: |
Langban and Harstig mines, Varmland, Sweden. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the Greek for "unusual", in reference to the composition. |
| Name Pronunciation: |
Ecdemite  |
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