What are the ore types of tantalum-niobium deposits?

  Tantalum-niobium deposits can be divided into five categories according to their genesis: magmatic deposits, Weijing deposits, vapor-forming hydrothermal deposits, contact self-metamorphic deposits and exogenous deposits. The tantalum and niobium minerals with industrial value mainly include tantalite, niobium iron ore, yellow chlore, brown yttrium niobium ore, black rare earth ore, titanium niobium calcium cerium ore, equiaxed tantalum lime stone, uranium tantalum niobium ore, fine stone, easy solution stone, etc. The size of tantalum-niobium deposits formed by ore-bearing rocks of different deposit types varies greatly.