The following tasks were set before the X-ray radiometric study: to establish amorphous or crystalline nature of samples; to find out whether there are significant structural changes for different samples of gummites, isolated by morphological features into varieties; to identify, if possible, the reasons for the structural 'features of different samples; to give X-ray radiometric standards for gummites, comparing them with the results of X-ray radiometric studies of these minerals available in the literature; to trace the nature of changes in minerals at the and The work was carried out in the X-ray radiometric laboratory of the Fedorovsky Institute at the Leningrad Mining Institute in 1948.