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- W2379095381 abstract "With the development of analytical methods and accumulation of analytical data, the potential value of the application of platinum-group elements (PGE) in geochemistry has been gradually recognized. However, it is unknown about the existence form of PGE in the mantle. Based on the previous studies, we have reviewed the research results of PGE fractionation mechanism and inhomogeneous distribution in the upper mantle. It shows that (1) except for Au, the alteration does not affect the PGE fractionation; (2) the host mantle-derived rocks for PGE are mainly sulfides or alloys, in which the PGE are not evenly distributed; so it is insufficient to solely consider the correlation coefficient of PGE with MgO, Cr and Ni and only discuss the olivine, spinel and chromite contribution to PGE fractionation during partial melting and fractional crystallization; the sulfides should be considered; (3) sulfide inclusions and interstitial sulfides concentrated in mantle-derived rocks show different PGE distribution patterns; mantle- or slab-derived fluids carrying PGE metasomatized interstitial sulfides in mantle-derived rocks, which led to PGE fractionation in mantle-derived rocks; (4) the addition of core material and sulfide collections alone cannot totally deny the late veneer hypothesis during the earth accretion. So the distribution of PGE in the mantle is characterized by large-scale homogeneity and small-scale heterogeneity." @default.
- W2379095381 created "2016-06-24" @default.
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- W2379095381 date "2003-01-01" @default.
- W2379095381 modified "2023-09-23" @default.
- W2379095381 title "REVIEW ON GEOCHEMISTRY OF PLATINUM-GROUP ELEMENTS" @default.
- W2379095381 hasPublicationYear "2003" @default.
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