The grading of field logging f-spectrometers is an important but poorly developed issue. Usually it is performed in f-saturated media modeling the conditions of measurements in boreholes.

Interest in the study of the behavior of K in the zone of hypergenesis has become particularly important in connection with the widespread introduction of gamma-spectrometry in the practice of prospecting for ore deposits, which makes it possible to obtain information on the distribution of K in loose sediments over large areas and use these data in various geological and geochemical constructions ...