The analysis of rare-earth bearing minerals using K and L X-ray spectra

Abstract REE bearing minerals were analysed by means of their L X-ray spectra using both PIXE and EPMA microprobes. Quantitative data were found in a good agreement for concentrations. LOD values for each REE analysis by EPMA and PIXE are estimated. In order to get rid of the multiple interferences between L lines, we used the LEGe detector to obtain well-resolved K-ray REE spectra using a 3 MeV proton beam.