Keywords REE-Niobium-iron deposit;dolostone;micrite mound;carbon isotopes;oxygen isotopes;mantle fluid;metasomatism;Bayan Obo;Inner Mongolia;

• 稀土-铌-铁矿床;白云岩;微晶丘;碳酸岩墙;碳和氧同位素;地幔流体;交代;作用;白云鄂博;内蒙古;