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Geochemical Characteristics of Germanium  Coal in Baoshan Mining Areas in Yunnan Province

LIU Wei,YAO Yingwen,YIN Qiong,FANG Na,LI Wanhong   

  1. 1.Faculty of Metallurgy and Mining Engineering,Kunming Metallurgy College,Kunming650033,China;2.Yunnan Geological Engineering Survey and Design Institute,Kunming 650000,China
  • Received:2019-10-16 Online:2019-10-31 Published:2019-10-31

Abstract: In order to further analyze the metallogenic geological environment of germanium coal in Baoshan mining area in Yunnan Province,and explore its intrinsic regularity and influencing factors,the samples of germanium-bearing coal in this area were taken and geochemical tests were carried out.The ash and volatile matter of germanium coal were positively correlated with germanium content,while the ash index was negatively correlated with germanium  content.The germanium  content was significantly correlated with KO and NaO in ash,with correlation coefficients of 0.702 and 0.907,ΣREE is positively correlated with germanium content,and the values of δEu and δCe are generally negative(<1).The distribution pattern of rare earth is generally slow and left-leaning(HREE relative enrichment).This indicates that germanium coal in this area was formed in alkaline reduction environment.The stronger the reducibility,the easier the formation of germanium enrichment.The activation and migration of germanium are closely related to local hydrothermal activities.

Key words: germanium, geochemistry, hydrothermal solution

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