Figure 3. Representative photomicrographs of syenite and the weathering blanket taken under plane polarized light and crossed polars. (a) syenite showing microcrystals of plagioclase, biotite and amphibole. (b) Opaque minerals surrounding the lamelar crystal of plagioclase and quartz. (c) Saprolite horizon showing quartz, plagioclase and clay (d): Saprolite horizon showing opaque mineral mainly oxides, amphibole, plagioclase and clay. (e) Horizon B showing crystals of plagioclase in a clayey matrix. (f) Horizon Ah reveals clayey matrix trapping plagioclase and quartz Abbreviations translate as follows: Pl=plagioclase, Bt= biotite, Am=amphibole, Qz=quartz, Hm=hematite, Ox=oxides, Cl=clay mineral, K-Fs=feldspar , Zr= zircon

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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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