| LC control no. | sh 85103313 |
|---|---|
| LC classification | QD172.P8 |
| Topical heading | Platinum group |
| Variant(s) | PGEs (Platinum group elements) PGMs (Platinum group metals) Platidises Platinoids Platinum group elements Platinum group metals Platinum metals |
| See also | Transition metals |
| Subject example tracing | Example under Metals |
| Found in | Wikipedia, Oct. 15, 2012: Platinum group (The platinum group metals (abbreviated as the PGMs; alternatively, the platinoids, platidises, platinum group, platinum metals, platinum family or platinum group elements (PGEs)) is a term used sometimes to collectively refer to six metallic elements clustered together in the periodic table. These elements are all transition metals, lying in the d-block (groups 8, 9, and 10, periods 5 and 6). The six platinum group metals are ruthenium, rhodium, palladium, osmium, iridium, and platinum. They have similar physical and chemical properties, and tend to occur together in the same mineral deposits. However they can be further subdivided into the iridium-group platinum group elements (IPGEs: Os, Ir, Ru) and the palladium-group platinum group elements (PPGEs: Rh, Pt, Pd) based on their behaviour in geological systems.) WebElements website, Oct. 15, 2012 (under Rhodium: Ruthenium, rhodium, palladium, osmium, iridium, and platinum together make up a group of elements referred to as the platinum group metals (PGM)) Platinum-group metals statistics and information, via USGS Minerals Information website, Oct. 15, 2012 (the six platinum group metals (PGM) - iridium, osmium, palladium, platinum, rhodium, and ruthenium) Wilburn, D.R. Platinum-group metals--world supply and demand, 2004, viewed online, Oct. 15, 2012: p. 7 (platinum-group metals (PGMs), which includes platinum, palladium, rhodium, ruthenium, osmium, and iridium) |
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