Journal of University of Science and Technology of China ›› 2012, Vol. 42 ›› Issue (1): 10-16.DOI: 10.3969/j.issn.0253-2778.2012.01.002

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Geochemistry of rare earth elements (REEs) in coal from magmatic intrusion area from Wolonghu Coal Mine

JIANG Mengmeng   

  1. CAS Key Laboratory of Crust-Mantle Materials and Environments, School of Earth and Space Sciences, USTC, Hefei 230026, China
  • Received:2011-06-03 Revised:2011-09-28 Online:2012-01-31 Published:2012-01-31

Abstract: Magmatic rock samples and adjacent coal samples were collected from a vertical section in the Wolonghu Coal Mine, Huaibei. The chemical extraction experiments were carried out, and the abundances of rare earth elements (REEs) in samples and coal ashes were determined by inductively couple-plasma mass spectrometry (ICP-MS). The occurrences of REEs were studied using sequential chemical extraction Experiment (SCEE) in different extraction liquids and conditions. The characterizations of the concentration, distribution patterns and the occurrence of REEs were analyzed. The results show that exchange of material between the magma and the coals occurred in the process of magmatic intrusion. Due to the superimposition of coal-forming microenvironment and magmatic intrusion, the distribution patterns of magma and coals are different. The result of SCEE shows that REEs are mainly distributed in sialic state, and that the source of REEs is terrigenous.

Key words: magma, coal, rare earth elements (REEs), geochemistry