The regularities of uranium deposit distribution and the methodology of their assessment

The world's known uranium deposits are assignable to a variety of genetic groups and to different age categories. Soviet scientists have drawn attention to the possibility of identifying several important metallogenic epochs of uranium deposit formation which are characterized by definite genetic series. It is noted that there is a definite time dependence in the evolution of the composition of the ores and in the mode of formation of the deposits, the patterns of which can be used to evaluate the uranium-bearing characteristics of extensive areas. The authors examine the regional and local patterns of deposit occurrence and deposit structure for the case of hydrothermal and infiltration groups. Data are cited from a statistical analysis of the productivity of various uranium deposits inside the earth, and recommendations are made on how to take the patterns into account when assessing the size of deposits and when determining methods of investigating them