Experimental Geochemistry of Rhenium and the Platinum-Group Elements

该项目研究地球内部硅酸盐系统中高亲铁元素的地球化学。pi将开展一项实验计划，以研究贵重亲铁元素的溶解度和矿物/熔体分配行为。主要的科学目标是量化：(1)对年代学和行星演化具有重要意义的示踪元素Re和Os的地球化学行为；(2)一般铂族元素的地球化学行为。pi将以Re-Os同位素体系为目标，对Re和Os的晶体/熔体分配进行系统研究。第二种方法涉及系统的溶解度研究，以量化亲石相中高度亲铁元素溶解度的化学控制。实验将在一气氛气体混合炉、活塞缸装置和多砧装置上进行。

9706024 Drake This project addresses the geochemistry of highly siderophile elements in silicate systems of Earth's interior. The PIs will carry out an experimental program to investigate the solubility and mineral/melt partitioning behavior of noble siderophile elements. The major scientific goals are to quantify: (1) the geochemical behavior of Re and Os, elements important for chronology and as tracers of planetary evolution; (2) the geochemical behavior of the platinum group elements in general. The PIs will target the Re-Os isotopic system and conduct systematic studies if crystal/melt partitioning of Re and Os. A second approach involves systematic solubility investigations to quantify the chemical controls on highly siderophile element solubilities in lithophile phases. Experiments will be carried out in one-atmosphere gas-mixing furnaces, piston-cylinder apparatus, and multi-anvil apparatus.