Alkaline massif, composed of silicate alkaline rocks (alkali syenites, nepheline syenites, alkali pyroxenites, and melteigites) and carbonatites (sövites, alvikites, and beforsites). The latter are complex rare metal–apatite ores. Their average apatite grade is approximately 10%, their total REE content is approximately 0.15%, and their average Nb concentration is 100–500 ppm.
References:
- Ryabchikov, I.D., Kogarko, L.N., Krivdik, S.G., and Ntaflos, T. (2008): Constraints of the Formation of Carbonatites in the Chernigovka Massif, Azov Region, Ukraine. Geology of Ore Deposits 50(6), 423-432.
Mineral List:27 entries listed. 20 valid minerals. 1 type locality (valid mineral).
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