Effect of pedogenic clay minerals on the sorption of copper in a Luvisol B horizon

►Vermiculitization of chlorite enhanced copper sorption on Luvisol B horizon. ►Iron coatings increase copper sorption on clay minerals. ►Al-hydroxy-interlayering of pedogenic vermiculite decreases copper sorption. ►Potassium fixation and illitization decreases copper sorption. ►Adsorbed copper causes the loss of expansion of vermiculite.