APPLICATION OF K0-NAA IN THE DETERMINATION OF GOLD AND OTHER TRACE ELEMENTS IN MINERALIZED ROCKS FROM EL-SID GOLDDISTRICT, EASTERN DESERT, EGYPT

k - neutron activation analysis is an important method for multi-element analysis .The k . NAA 0 was used to determine the concentration of gold and some othertrace elements in the mineralized mafic (gabro) and ultramafic (serpentinite) rocksfrom El-Sid gold district, Central Eastern Desert, Egypt . The samples were properly prepared together with the standards Au, Zr and Ni and simultaneously irradiated inthe irradiation position #2, which is characterized with the neutron spectrum parameters α= -0.01 and f =20. After activation, the samples were subjected togamma-ray spectrometry, using a high-purity germanium detection system andcomputerized multichannel analyzer. The concentrations of 25 elements, beside gold were determined. The results showed that the concentrations of incompatible elements including rare earth elements, large-ion lithophile elements (Rb, Sr, Th, Ba,Cs Na) and high field strength elements (Ta, Hf Zr), and the compatible elements (transition elements Co Cr) are different from one sample to another. The results were briefly discussed within the text of this research work.