Effect of Silicon on Activity Coefficients of P, Bi, Cd, Sn, and Ag in Liquid Fe-Si, and Implications for Core FormationCores of differentiated bodies (Earth, Mars, Mercury, Moon, Vesta) contain light elements such as S, C, Si, and O. We have previously measured small effects of Si on Ni and Co, and larger effects on Mo, Ge, Sb, As metal/silicate partitioning. The effect of Si on metal-silicate partitioning has been quantified for many siderophile elements, but there are a few key elements for which the effects are not yet quantified. Here we report new experiments designed to quantify the effect of Si on the partitioning of Bi, Cd, Sn, Ag, and P between metal and silicate melt. The results will be applied to Earth, Mars, Moon, and Vesta, for which we have good constraints on the mantle Bi, Cd, Sn, Ag, and P concentrations from mantle and/or basalt samples.
Document ID
20180002587
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Righter, K. (NASA Johnson Space Center Houston, TX, United States)
Pando, K. (Jacobs Technology, Inc. Houston, TX, United States)
Ross, D. K. (Jacobs Technology, Inc. Houston, TX, United States)
Righter, M. (Houston Univ. Houston, TX, United States)
Lapen, T. J. (Houston Univ. Houston, TX, United States)