Oxidation state and coordination environment of Pb in U-bearing minerals

This study examines the oxidation and coordination of lead (Pb) in the uranium (U) minerals uraninite (UO2), coffinite (USiO4), and brannerite (UTi2O6), and minerals that have U as a minor constituent, zircon (ZrSiO4) and titanite (CaTiSiO5). The characterization of Pb was conducted through a combination of micro-synchrotron X-ray fluorescence mapping (µSXRF) and micro-X-ray absorption spectroscopy (µXAS), collected at the Pb LII and LIII edge...