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Some Typical Partition and Distributition Patterns of Platinum Group Elements

Partition patterns. There are three typical partition patterns. They are separately named as Ru-Pt pattern, Ru-Os pattern and Pt-Pd pattern. The Ru-Pt pattern is characterized in element concentration by Ru,Pt > Os,Ir, Rh,(Pd). In some cases, Pd may be slightly greater than Ru, but, among relatively inertial dements Os, Ru, Rh and I r , Ru is obviously more enriched. The platinum group dements in the earth core, lower and upper mantle as well as chondrite representing for mantle bears this kind of partition pattern. Concretely, Ru is somewhat richer than Pt in the earth core material, and Pt content in mantle however is higher than Ru (Fig. 1).