Figure 6. Histograms showing the gain/loss of major oxides and trace elements in the the weathering materials developed on syenite in the Ngombas area. Calculations are based on the immobile element method with TiO₂ as the least mobile element and the average composition of the fresh syenite used as the unaltered reference protolith. a, b and c represent the major elements data for the alteration categories while a-1, b-1 and c-1 represent the trace elements counterparts

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Migration and Retention of Uranium in the Weathering Blanket Developed on Uraniferous Syenite in Ngombas Southern Cameroon

Joel Simon Mbai, Akumbom Vishiti, Bravo Martin Mbang Bonda, Gilbert François NGON NGON, Elie Constantin Bayiga, Martine Gérard, Jacques Etamè

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