Features of Solvent Extraction of Lanthanides and,
Mar 26, 2008· Abstract. Solvent extraction is a powerful method for lanthanide and actinide intra- and inter-group separations. Apart of the general parameters governing the extraction.f-electron elements exhibit several peculiarities of the process.Two of them are described in the paper: double-double (tetrad) effect in the lanthanide and actinide series and itinerant properties of the actinides (III) in,Rare Earths Statistics and Information - USGS.gov,The principal economic sources of rare earths are the minerals bastnasite, monazite, and loparite and the lateritic ion-adsorption clays. The rare earths are a relatively abundant group of 17 elements composed of scandium, yttrium, and the lanthanides. The elements range in crustal abundance from cerium, the 25th most abundant element of the 78 common elements in the Earth'sXenotime - CONCENTRATION OF MINERALS,Formula: YPO 4 Mohs scale hardness: 4.5 Specific gravity: 4.4–5.1 g/cm 3 Rare earth elements: Y, Tm, Dy, Er, Eu, Lu, Tb, Gd, Sc Rare earth content, %: Y 2 O 3 52–61,4 Other constituents, %: ThO 2, UO 2 upto 5; ZrO 2 3; SnO 2, SiO 2 9; (U 3 O 8 3) Mineralklasse: Phosphate thorium and uranium Xenotime is a rare earth phosphate mineral, the major component of which is yttrium orthophosphate.