The article presents the results of studying mineralogical and geochemical features coals clay interlayers Shubarkol deposit. There were analyzed 71 samples layers 49 coal using instrumental neutron activation analysis (INAA), powder X-ray diffractometry, scanning electron microscopy. A comprehensive characteristics their enclosing was carried out. variety criteria made it possible to establish...

Abstract This paper is dedicated to the isotope-geochemical study of zircon from riebeckite granites Verkhnee Espe rare earth-rare metal deposit and specification its U–Pb age. Zircon massif peculiar in high content non-formula elements (up 43000 ppm REE, up 22000 Y, others) demonstrates a clearly expressed heterogeneous structure. The central rim zones show “magmatic” rare-earth element (REE) ...

the solvent extraction of rare earth metal ions from nitrate solutions by 5.11.17.23-tetra-tert-butyl-25,27-bis(diethylcarbamoylmethoxy)-26,28-dihydroxycalix[4]arene (l) in 1,2-dichloroethane has been investigated. the alalysis of the extraction equilibrium obtained from a mixture of la3+, eu3+, er3+ and y3+ revealed that the extracted species have a 1:1 metal/ligand ratio. the intra-group sepa...

the effect of rare earth (re) elements, including ce and la, on the sorption properties of zr-co getters was investigated in this work. the phase evolution, microstructural characteristics of getter powders were studied by means of x-ray diffraction method, scanning electron microscopy (sem) and energy dispersive x-ray spectroscopy (eds). the nanostructured zr3co intermetallic compound has been...

The migration and spatial distribution characteristics of topsoil rare earth elements (REEs) are significant for the risk assessment external environment. However, REEs in ion-adsorption type element (REE) mining areas is poorly studied. We aimed to determine differences control factors typical mines South Jiangxi, China. Sixty-five samples eighteen profile were collected analyzed their content...