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An economically important raremetal mineralization is recorded in the pegmatite bodies of Gabal Ras Baroud younger granitic pluton, Central Eastern Desert of Egypt. These pegmatite bodies are of variable size and are compositionally zoned. Radiometric measurements of some anomalous pegmatite samples show that their equivalent uranium (eU) content is 219 -328 ppm, whereas their equivalent thorium (eTh) content is 783 -1101 ppm. On the other hand, the analysis of several separated mineral grainsdoi:10.2465/jmps.090201 fatcat:jseelzsv3rb3lj4tvnyximmqei