The article presents result of study of microparagenetic associations of carbonatite and metasomatic carbonaceous rock of Delbek ore occurrence (Matchaysky alkaline intrusive massif, Turkestan rare metal belt, Southern Tien Shan)
Composition of rock-making, secondary and ore minerals was established by X-ray microanalysis. In the group of titanium-niobate detected varieties and identified new mineral in this ore occurrence (baotite, thorite, vanadinite). Mineral benchmarks are confirmed carbonatites and metasomatic carbonaceous rocks.
Keywords: titanium-niobate, alkaline complexes, Turkestan rare metal belt.