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Osmium Mineral Data
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General Osmium Information
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 Chemical Formula: |
(Os,Ir) |
| Composition: |
Molecular Weight = 190.71 gm |
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Iridium 25.20 % Ir |
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Osmium 74.80 % Os |
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______ |
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100.00 % |
| Empirical Formula: |
Os0.75Ir0.25 |
| Environment: |
In magmatic segregation deposits and concentrated in placers derived from ultrabasic rocks. |
| IMA Status: |
Valid Species (Pre-IMA) 1804 |
| Locality: |
Urals Region, Sverdlovskaya Oblast', Nizhnii Tagi, Russia. Link to MinDat.org Location Data. |
| Name Origin: |
Named for the principle element in the composition. |
| Name Pronunciation: |
Osmium  |
| Synonym: |
ICSD 40323 |
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Iridosmine |
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Nevyanakite |
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PDF 41-601 |
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Rutheniridosmium |
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Siserskite |
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