Dolomite and calcite are distinguished
The differential thermal curve of endothermic peak peak temperature of calcite is 842 to 907 DEG, and 960 DEG standard gap. A variety of dolomite and calcite chemical composition of trace elements in the total replacement of the higher, the thermal decomposition temperature decreased more; hydrothermal metasomatic metamorphism dolomite have become stronger, the thermal decomposition temperature decreased more; calcite thermal metamorphism is stronger, the thermal decomposition temperature decreased more.
Rare earth carbonate deposit belongs to magmatic hydrothermal origin. The surrounding rock ore rich rare earth and rare earth mineral is dolomite, gangue mineral is dolomite and calcite. The differential thermal curve of endothermic peak peak temperature is 747 to 798 DEG C dolomite, 798 ~ 835 DEG, 830 DEG C and standard difference;
The iron and niobium rare earth deposits in Inner Mongolia, Baiyunebo Province, are well known for their rich minerals, large scale and complicated genetic cause. The iron deposits are mainly deposited and transformed by hydrothermal fluid;
