We present the first Rare Earth Elements (REE) concentration record determined in 294 sections of an Antarctic ice core (EPICA Dome C), covering a period from 2.9 to 33.7 kyr BP. REE allow a detailed quantitative evaluation of aeolian dust composition because of the large number of variables (i.e. 14 elements). REE concentrations match the particulate dust concentration profile over this period...

Separation methods for rare earth elements (REE) are predominantly based on solvent extraction procedures. These methods are low in metal selectivity and generate large amounts of waste resulting in high capex and opex costs. Molecular Recognition Technology (MRT) is a much simpler green chemistry process that uses no organic solvents and carries out separations with highly metal-selective Supe...

Microbes exert extensive control on redox element cycles. They participate directly or indirectly in the concentration and fractionation of elements by influencing the partitioning between soluble and insoluble species. Putative microbially mediated manganese (Mn) oxides of the birnessite-type, enriched in rare earth elements (REE) + yttrium (Y) were recently found in the Ytterby mine, Sweden. ...

Novel methods were developed for the determination of 12 of the 14 Rare Earth Elements (REE) in seawater. Initial extractions of the REE by chelating ion exchange chromatography is followed by cation exchange for removal of co-extracted U and remaining traces of major ions. Finally traces of U are removed by anion exchange before irradiation for 8 hours at a flux of 5 x 1013 neutrons.cm-2 .sec~...

Introduction: The rare earth elements (REEs) are concentrated in CAIs by ~20 times the chondritic average [e.g., 1]. The REEs in CAIs are important to understand processes of CAI formation including the role of volatilization, condensation, and fractional crystallization [1,2]. REE measurements are a well-established application of ion microprobes [e.g., 3]. However the spatial resolution of RE...

Partition coefficients (DM) for rare earth elements (REE) (La, Ce, Nd, Sm, Dy, Er and Yb) and other trace elements (Ba, Rb, B, Sr, Ti, Y and Nb) between zircon and melt have been calculated from secondary ion mass spectrometric (SIMS) analyses of zircon/melt inclusion pairs. The melt inclusion-mineral (MIM) technique shows that DREE increase in compatibility with increasing atomic number, simil...

The concentrations of the rare earth elements (REE) in surface waters and sediments, when normalized on an elementby-element basis to one of several rock standards and plotted versus atomic number, yield curves that reveal their partitioning between different sediment fractions and the sources of those fractions, for example, between terrestrial-derived lithogenous debris and seawater-derived b...

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Recent years have witnessed increasing awareness and interest in rare earth elements (REE). These several, usually unfamiliar elements, are key components of countless products used our daily lives. Because their use many modern technologies, including those important for national security, the demand REE grows, so does production, need to find new sources improve extraction. This article provi...

Introduction: Remotely sensed geochemical data provide extremely valuable information concerning the global distribution of elements on a planetary surface, and are valuable in the identification of major crustal terranes. Planetary geochemical maps of the Moon and Mars for several elements such as Th, rare earth elements (REE), K, and Fe have been or are currently being prepared and have yield...