Based on the latest data on ore content of volcanic formations, formation-facies analysis of volcanic formations, volcanic structures and their development, the ratio of volcanic formations and small intrusions, the evolution of volcanism in the Precambrian and Phanerozoic are considered. The criteria for identifying volcanogenic deposits are justified and the multi-stage formation of most of them is shown. Lans are examples of ore-bearing volcanic belts and the main types of volcanic deposits. For geologists of research and production organizations. It can be used by senior students of geological universities.