The influence of certain experimental conditions on the courses of the thermal curves (DTA and DTG) of selected clay minerals
was studied. The thickness of the sample layer, the sample mass, the type of sample holder and the parameters of the air atmosphere
were varied in thermal analyses of 13 samples of clay minerals. Comparison of the results obtained on different clay samples
analysed under different experimental conditions may serve as the basis for the improvement of the thermal analysis methodology
applied for the study of clay minerals.