The 6# coal of Heidaigou from Junger Coalfield in inner Mongolia: The action of trace elements separation in the coal facies

The correlation between trace elements and coal-forming environment in the 6# coal from Junger coalfield has been studied with correlation analysis method. The result shows that there is obvious rule of trace elements separation in the coal facies. The most of “light elements” including IA, IIA and B groups of the forth period in periodic table are sensitive to the index of V/I and GI. The most of “heavy elements” such as elements after ones of IIIA and B groups of the fifth period in periodic table are sensitive to OI and BI index. Other elements are respectively correlated with TPI, VI, GWI and TI index. In a word, there is a trend in trace elements sensitive from V/I or GI to OI or BI when they are changed from light one to heavy, from low rank period to high and from low order A elements to high one.