Fenites Naberezhne village (Kalmius river, Azov region)

In Eastern Azov (the village of Naberezhne, the left bank of the Kalmiusr river), the rocks, which mainly consists of minerals of the silica group (quartz, chalcedony), oxides and carbonates of Fe, Mn, Ca were found. They contain fluorite, as well as a small amount of acmite and ribeckite and an increased content of REE. These rocks are localized in the field of typical apogranitoid fenites, which are widely distributed in the Azov region. Oxide-carbonate-siliceous rocks are considered as the formation of the upper part of the fenitization column, where SiO2 was removed from fenitized granitoids and Fe, Mn, Ca, CO2, and REЕ, which are characteristic of carbonatites and related fenitizing fluids, were introduced. These oxide-carbonate-siliceous rocks, together with typical apogranitoid fenites, are the criteria for the search for carbonatites with apatite and rare earth mineralization.