Geochemistry characteristics of trace elements & rare earth elements(REEs) of No.8 coal and parting in Malan Coal Mine, Xishan Coalfield
SUN Bei-lei
ZENG Fan-gui
LI Mei-fen
QI Fu-hui
Abstract：XRD, ICP - MS and conventional chemical analysis methods were applied to investigate geochemical characteristics of No. 8 coal, contents of trace elements and REEs in coal samples, coal roof, coal-bed gangue, parting and pyrite nodules compared the contents of REE in samples with the contents of most coal in North China, most coal in the United States and Carboniferons-Permian coal. The results indicate that Li ,Zn, Ga, Sr, Hf, U ,Zr, W, Sn and REEs concentrate in coal samples. V,Cr,Zn,Rb,Cs,Sr,Hf, U,Zr,W,Tl,Pb,Ni and REEs concentrate in coal roof. Li,V,Cu, Ga, Sr, Ba, Hf, Th, U, Zr, Sn, W, Pb and REEs in coal-bed gangue, Cr, Cu, As, Se, Cd, Sb, W, Tl and Pb concentrate in pyrite nodules. Hazardous trace elements (V, Cr, Ni, Cu, Zn, As, Se, Ba, Th, Cd, Sn, Sb, Tl and Pb) mainly enrich in coal roof,coal-bed gangue and pyrite nodules. Distribution patterns of REEs suggest that REEs are from terrigenous debris and influenced by seawater to some extent during the deposition of No. 8 coal seam. Correlation of REEs contents to ash yield and clustering analysis on contents of REEs and rock-forming elements show that REEs of No.8 coalseam mainly exist in clay minerals.
Keywords：coaltrace elementsrare earth element (REE)geochemistry
Publication Date：2010-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 110-116 )