Obtaining Osmium | |
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The discovery of Osmium Basic Information Obtaining Osmium Uses Today Sources |
Osmium occurs in nature in
iridosmine, a natural alloy of osmium and iridium. Osmium is found in platinum bearing
sands of the Urals, North America, and South America. It is also found in the nickel
ore in Sudbury, Ontario. Osmium is mined as a result of these other, more profitable
metals. If osmium were not found with such profitable metals, people might not ever
bother to fabricate it at all.
Fabricating osmium is difficult and complex. To fabricate osmium, there is first a preliminary treatment to remove any other silver, gold, palladium, or platinum. The resulting substance from this treatment is melted with sodium bisulfate. The resulting substance from that reaction is then filtered out water. Some of the substance dissolves into the water and some of the substance insoluble. The substance remaining, insoluble, contains the osmium. Ruthenium and osmium salts are extracted, and reacted with chlorine. The reaction emits two oxides. The osmium oxide is dissolved by treatment with alcoholic sodium hydroxide. This solution is mixed with NH4Cl, and osmium is the precipitate. The liquid is evaporated of and the metal is burned under hydrogen gas. Osmium is fabricated as a powder an then heated to form a solid. Osmium has a hexagonal crystal structure. |