Platinum-Group Elements in Cosmochemistry

Research Article| August 01, 2008 Platinum-Group Elements in Cosmochemistry Herbert Palme Herbert Palme *Institut für Geologie und Mineralogie, Universität zu Köln Zülpicherstrasse 49b, 50674 Köln, Germany E-mail: herbert.palme@uni-koeln.de Search for other works by this author on: GSW Google Scholar Elements (2008) 4 (4): 233–238. https://doi.org/10.2113/GSELEMENTS.4.4.233 Article history first online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Herbert Palme; Platinum-Group Elements in Cosmochemistry. Elements 2008;; 4 (4): 233–238. doi: https://doi.org/10.2113/GSELEMENTS.4.4.233 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyElements Search Advanced Search Abstract In a cooling solar nebula, five of the six platinum-group elements (PGE) condense as refractory-metal alloys at temperatures above the condensation of Fe-Ni metal. Non-refractory Pd condenses in solid solution with Fe-Ni. Such refractory alloys are preserved in some meteorites, although they are often highly altered. The high resistance of PGE to oxidation leads to efficient extraction with metallic Fe-Ni during metal segregation and core formation. Experimentally determined PGE metal-silicate partition coefficients predict lower contents of PGE in planetary silicates than are found, supporting a late addition of PGE components. PGE are particularly useful as tracers of impacting extraplanetary materials in the strongly PGE-depleted crusts of the Earth and other planets. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.