The influence of carbon on trace element partitioning behavior

The iron–nickel–phosphorus system: Effects on the distribution of trace elements during the evolution of iron meteorites

“…One hypothesis is that the higher P concentrations in the solid metal in the Fe-Ni-P system as compared to the essentially zero S concentration in the solid metal in the Fe-Ni-S system is an important difference which is influencing the partitioning behavior. There is some support for this hypothesis, in that partitioning in the FeNi-C system, which also has high levels of C in the solid metal, suggests a similar discrepancy between suggested D o values in the Fe-Ni-S and Fe-Ni-C systems for some elements (Chabot et al, 2006). Solid metal/liquid metal experiments in the light element free Fe-Ni system are planned but will likely require a different experimental set-up than evacuated silica tubes used in this study.…”

“…The distribution of trace elements in the Fe-Ni-P system describe S-loving behavior and the term anthracophile to describe C-loving behavior (Chabot et al, 2006), we adopt the term phosphorophile to describe P-loving behavior. As shown in Fig.…”

“…/j.gca.2008 centrations of the light elements S, C, and P, in the metallic liquid can cause significant variations in the partitioning behaviors of trace elements (e.g. Willis and Goldstein, 1982;Jones and Drake, 1983;Chabot et al, , 2006. Additionally, as crystallization of a metallic melt proceeds, the light elements are excluded from the solid metal and enriched in the liquid metal, enhancing their effects on the trace element partitioning behaviors and, in turn, on the compositions of crystallizing iron meteorites.…”

“…In contrast, other elements, such as Cr, behave as chalcophile (S-loving) elements and their solid metal/liquid metal partition coefficients decrease with increasing S in the metallic liquid. Chabot et al (2006) recently completed a multi-element systematic study of solid metal/liquid metal partitioning in the Fe-Ni-C system. That study found that some elements, such as Re and W, behave as anthracophile (C-loving) elements, with decreasing solid metal/liquid metal partition coefficients with increasing C content of the system; this behavior is opposite to the effect of S on Re and W partitioning, where the partition coefficients increase significantly with increasing amounts of S in the metallic liquid.…”

Metal–silicate partitioning of tungsten at high pressure and temperature: Implications for equilibrium core formation in Earth

“…The considerable influence of carbon in the metal-silicate system is unsurprising when one considers documented strong interaction between W and C in solid metal/liquid metal systems (Uhrenius, 1980;Gustafson, 1987;Chabot et al, 2006) and in prior studies of metal-silicate partitioning (e.g. Jana and Walker, 1997a; Righter and Drake, 1999).…”