Determination of U, Th, Hf, Zr, Sc and rare earth elements in cogenetic zircon with monazite in beach sand by neutron activation analysis
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Zircon separated from samples of monazite in beach sand have been analyzed for Zr, Hf, U, Th, Sc and REE concentration by the neutron activation analysis technique. After irradiation, the rare earth elements were separated from Zr and Hf by oxalate precipitation, using La as a carrier, from239Np/U/ by ion-exchange chromatographic method and from233Pa/Th/ by co-precipitation with MnO2. The chondritic normalized REE pattern of two zircon samples show negative Eu anomalies with a slope increasing at the heavy rare earths.
KeywordsPrecipitation Zircon Rare Earth Beach Oxalate
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