The processes of mineral formation and some representative mineral types and variety of rocks for each process are shown in the wall glass cases. There is a general scheme of the nature cycle of the substance, determining the processes of sedimentation, magmatism and metamorphism.
Minerals from Madan and Burgas regions are exhibited in the central glass-case. The new acquisitions for the museum collections and temporary, regional and other thematic exhibitions are organised permanently in the hall.