Mineralogical and geochemical features of the coarse saprolite developed on orthogneiss in the SW of Yaoundé, South Cameroon

► Positive Eu-anomalies in all weathered samples. ► Negative Ce-anomalies in the loose and iron duricrust samples, and positive one in the kaolinitic white veins. ► High Mn, Co, Ba, Zr, Pb and Ce contents in the Mn-bearing phases. Strong positive Ce-anomaly is observed. ► Strong depletion of several elements in the loose and iron duricrust samples.