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由于铌铁矿-钽铁矿类矿物铌与钽、铁与锰为完全类质同象系列混合物,出现亚种甚多,如铌铁矿、钽-铌铁矿、铌-钽铁矿、钽铁矿、镁铌铁矿(新矿物)、锡钽铁矿(新矿物)等等.这些矿物,在某些性质上甚为相似.因此,在鉴定工作中感到困难.近年来国内外对此作了不少工作,找到一些比较灵敏精确的鉴定方法.茲就现有资料并结合我们的经验,将有关的方法介绍如下:
As the niobite-tantalite minerals niobium and tantalum, iron and manganese is a purely homomorphic series of mixtures, there are many subspecies, such as niobite, tantalum - niobium iron ore, niobium - tantalite, tantalum Iron ore, magnesia-iron ore (new minerals), tantalite (new minerals), etc. These minerals are very similar in some aspects, and therefore, they find it difficult to identify them. In recent years, A lot of work has been done to find out some more sensitive and accurate methods of identification. With reference to the available information and our experience, we will introduce the relevant methods as follows: