在已知的合稀有金属碳酸盐岩的地球化学规律当中,具有理论和实际意义的则是该类型矿床的主要有益成分—铌、钽与伴生元素,特别是铀和钍之间的相互关系。如果很快地确定出放射性元素与铌、钽的相互关系,就能省去繁杂而成本又很高的土酸化学测定,而 Among the known laws of geochemistry of combined rare-earth carbonate rocks, of theoretical and practical significance are the main beneficial components of this type of deposit - the correlation between niobium, tantalum and associated elements, especially uranium and thorium . If the correlation between radioactive elements and niobium and tantalum is quickly determined, complicated and costly high earth acid chemistry can be eliminated