Presence of salts in the rock often creates difficulties of methodological order when studying granulometric composition and physical and mechanical properties of rocks. The methodology of analysis of saline rocks is still poorly developed. In the present work some methodical questions on preparation of rock for granulometric analysis, determination of plasticity and specific gravity are considered, which are solved in relation to carbonate-clayey rocks of Tatar layer of Permian system. The methodology and technique of determination of physical and mechanical properties of saline differences of sandy and clayey soils are devoted to a considerable number of works, mainly aimed at the study of soil preparation for analysis - the main factor affecting the results of analysis. The question of preparation of non-saline rocks for analysis is solved relatively easily and does not cause much disagreement, while the question of preparation of saline rocks turns out to be very complicated.