Having passed three editions and translated into many foreign languages, this textbook was and remains one of the most popular manuals on mineralogy. This publication is published with minimal changes and additions related to the update of data in connection with the development of mineralogy and related sciences. General information on minerals has been clarified, sections devoted to the features of chemism and crystalline structure of minerals, their morphology and research methods have been expanded. Crystal chemical formulas of a number of minerals have been clarified, international symbols of point and spatial symmetry groups are given. The list of recommended references for all sections has been updated and supplemented. For students of geological specialties and all interested in mineralogy.