The accurate determination of the clay component contents of Latosols can contribute for the improvement of both use and management of such soils. In this research, the kaolinite and gibbsite contents of iron-free clay in Latosols were determined by differential scanning calorimetry (DSC) and with the application of the Rietveld method to X-ray diffraction data for comparison with mineral contents calculated by the allocation method. It is likely that crystallographic differences between kaolinite and gibbsite used in the DSC calibrations […]