Jp. Patel et Mj. Mangala, ELEMENTAL ANALYSIS OF CARBONATITE SAMPLES FROM MRIMA HILL, KENYA, BY ENERGY-DISPERSIVE X-RAY-FLUORESCENCE (EDXRF), Nuclear geophysics, 8(4), 1994, pp. 389-393
A total of 30 radioactive carbonatite samples from four zones of the M
rima Hill were analysed using energy dispersive x-ray fluorescence tec
hnique. Thorium with a mean concentration of 770 mug/g is the main sou
rce of high environmental radiation. The concentration of cerium, bari
um, niobium and iron are significant and worth economic exploitation.
For validity of the results, certified reference materials IAEA (Soil-
7) and the Canadian (SY-3) samples were analysed by the same method.