Manganese potential of Neogene rocks in Central Russia (Tambov-Lipetsk region)

Materials related to the manganese potential of Neogene rocks (Sosnovka Formation) in Central Russia are summarized. Concretions and geoides in primary manganese carbonates are most likely early diagenetic formations. However, we cannot also rule out the possibility of their formation after the early diagenetic (catagenetic) stage of sediment transformation. The Tambov-Lipetsk region with manganese potential outlined in this paper is located in an economically favorable setting. Probability of the discovery of commercial manganese oxide deposits in this region is discussed.