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Oursinite Mineral Data
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General Oursinite Information
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 Chemical Formula: |
(Co,Mg)(H3O)2[(UO2)SiO4]2•3(H2O) |
| Composition: |
Molecular Weight = 871.78 gm |
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Magnesium 0.28 % Mg 0.46 % MgO |
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Uranium 54.61 % U 61.95 % UO2 |
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Cobalt 6.08 % Co 7.74 % CoO |
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Silicon 6.44 % Si 13.78 % SiO2 |
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Hydrogen 1.39 % H 12.40 % H2O |
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Oxygen 31.20 % O |
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______ ______ |
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100.00 % 96.33 % = TOTAL OXIDE |
| Empirical Formula: |
Co0.9Mg0.1(H3O)2(UO2)2(SiO4)2•3(H2O) |
| Environment: |
In the oxidation zones of uranium ores. |
| IMA Status: |
Approved IMA 1983 |
| Locality: |
Shikolobwe, Shava, Zaire. Link to MinDat.org Location Data. |
| Name Origin: |
Named from the French "oursin", sea urchin, in allusion to the radiating habit of the acicular crystals. |
| Name Pronunciation: |
Oursinite + Pronunciation  |
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