Możliwości identyfikacji pierwiastków ziem rzadkich za pomocą podręcznego spektrometru XRF w rdzeniach wiertniczych z syenitowego masywu Ełku (otwór Ełk IG 3, NE Polska)

Abstract

POSSIBILITIES OF IDENTIFICATION OF RARE EARTH ELEMENTS BY PORTABLE XRF SPECTROMETERS IN DRILL CORES FROM THE EŁK SYENITE MASSIF (EŁK IG 3 BOREHOLE, NE POLAND) Abstract. The main aim of this study is to determine the contents of rare earth metals, using p-XRF, in the Carboniferous Elk syenite massif that cuts the Precambrian basement of the East European Platform. The paper presents the results of drill core study in the Elk IG 3 borehole. In situ chemical analyses of borehole materials were performed using the portable XRF Olympus Delta 50 Premium spectrometer (4 W Ta anode X-ray tube, 50 kV). Prior to analyses of natural rock samples the spectrometer parameters were optimized for selected rare earth elements, such as Y, La and Ce, as well as other elements ,such as Zr, Hf, U and Th. Handheld XRF non-destructive analyses have allowed the identification of anomalies of rare earth elements and places for further detailed petrographic and mineralogical analyses.