Uranium, thorium and REE partitioning into sulfide liquids: Implications for reduced S-rich bodies

Add time:08/01/2019    Source:sciencedirect.com

We have performed experiments at 1.5 GPa over the temperature range 1400–2100 °C to determine the partitioning of lithophile elements (U, Th, Eu, Sm, Nd, Zr, La, Ce, Yb) between sulfide liquid, low-S metals and silicate melt. The data demonstrate pronounced increases in partitioning of all the lithophile elements into sulfide at very low FeO contents (<1 wt%) of the silicate melt such that DU=[U]sulfide[U]silicate exceeds 1 and may be >10 in some cases. Similarly DSm may be >2 under the same conditions of low silicate FeO. This strong partitioning behaviour is found only be important in S-rich metals, however because the observed effect of low FeO on partitioning is uniquely confined to metallic melts close to stoichiometric FeS in composition.The results and the effects of FeS content of the metal and FeO content (or activity) of the silicate may be understood in terms of exchange reactions such as:UO2+2FeS=2FeO+US2

We also recommend Trading Suppliers and Manufacturers of THORIUM SULFIDE (cas 12138-07-7). Pls Click Website Link as below: cas 12138-07-7 suppliers

Prev:Chemical deposition and characterization of thorium-alloyed lead sulfide thin films
Next:Chromatographic separation of the theranostic radionuclide 111Ag from a proton irradiated thorium matrix)