Synonyms for iridosmine or Related words with iridosmine
Examples of "iridosmine"
are natural alloys of the elements osmium and iridium, with traces of other platinum-group metals.
Osmiridium has been defined as containing a higher proportion of iridium, with
containing more osmium. However, as the content of the natural Os-Ir alloys varies considerably, the constituent percentages of specimens often reflects the reverse situation of osmiridium describing specimens containing a higher proportion of osmium and
specimens containing more iridium.
In 1963, M. H. Hey proposed using
for hexagonal specimens with 32% < Os < 80%, osmiridium for cubic specimens with Os < 32% and native osmium for specimens Os > 80% (the would-be mineral native iridium of >80% purity was not known at that time).
Metallic iridium is found with platinum and other platinum group metals in alluvial deposits. Naturally occurring iridium alloys include osmiridium and
, both of which are mixtures of iridium and osmium. It is recovered commercially as a by-product from nickel mining and processing.
The nomenclature of Os-Ir-Ru alloys were revised again by Harris and Cabri in 1991. Afterwards, only four names were applied to minerals whose compositions lie within the ternary Os-Ir-Ru system: osmium (native osmium) for all hexagonal alloys with Os the major element; iridium (native iridium) for all cubic alloys with iridium the major element; rutheniridosmine for all hexagonal alloys with Ir the major element; and ruthenium (native ruthenium) for all hexagonal alloys with Ru the major element. The mineral names
, osmiridium, rutheniridosmium, ruthenian osmium, osmian ruthenium, ruthenium iridium and iridian ruthenium were proposed to be retired.
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