Description3e: The Abundance and Mobility of Chalcophile/Siderophile Elements in the Mantle and Crust
The abundance and isotopic compositions of highly siderophile elements (PGE, Re, Au) and chalcophile elements (e.g. S, Ni, Cu, As, Se, Ag, Te, Sn, Sb, Bi, Tl, Pb) have provided valuable insight on the processes of accretion, mantle differentiation, crustal recycling, and magma evolution. The interplay between these elements and volatiles is known to affect their partitioning between silicate melt, fluid and sulfide and is thought to be the key parameter controlling their mobility across and within earth reservoirs (mantle, crust, exospheres) and ore precipitation. However, the links between volatiles and chalcophile/siderophile elements remain difficult to constrain, and questions still persist regarding their speciation and partitioning behavior which greatly undermine the potential for new insights into large-scale geodynamic processes as well as the concentration of strategic metals at the local scale. We thus welcome work involving measurements of natural samples, experimental petrology, and geochemical/thermodynamic modeling to address the abundance, distribution and the elemental and isotopic fractionation of chalcophile (sensus lato) and siderophile elements between phases and/or Earth reservoirs in various geodynamic contexts.
|Period||19 Aug 2019 → 21 Aug 2019|
|Degree of Recognition||International|
Documents & Links
Activity: Membership › Membership of committee
Activity: Talk or presentation › Presentation