Volume 46 Issue 3
Jun.  2018
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LI Congcong, NING Shuzheng, QIAO Junwei, WEI Yunxun. Occurrence regularity and controlling factors of gallium in coal of Nanwu mining area, Chongqing[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(3): 15-20. DOI: 10.3969/j.issn.1001-1986.2018.03.004
Citation: LI Congcong, NING Shuzheng, QIAO Junwei, WEI Yunxun. Occurrence regularity and controlling factors of gallium in coal of Nanwu mining area, Chongqing[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(3): 15-20. DOI: 10.3969/j.issn.1001-1986.2018.03.004
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Occurrence regularity and controlling factors of gallium in coal of Nanwu mining area, Chongqing

  • 1. Aerophotogrammetry & Remote Sensing Bureau of China National Administration of Coal Geology, Xi'an 710199, China;

  • 2. China National Administration of Coal Geology(CNACG), Beijing 100038, China;

  • 3. China University of Mining and Technology, Xuzhou 221116, China

Funds: 

Geological Survey Project of China Geological Survey(DD20160187)

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  • Received Date: February 10, 2018
  • Published Date: June 24, 2018
    Graphical Abstract
    • Abstract
  • The Upper Permian Longtan Formation is the main coal-bearing rock series in Nanwu mining area of Chongqing. Based on the survey and sampling, ICP-MS (rare earth element), electron microscope and X-ray diffraction, the elemental geochemical characteristics were studied. It is found that the element Ga in seam C25 of Late Permian Longtan Formation in Nanwu mining area is enriched, showing the variation pattern of being high in the northeast and low in the northwest in the plane. In Tianbao coal mine in the northeast of the mining area, the coal mine has reached comprehensive utilization grade, the value of comprehensive utilization of metallic elements deserves attention. SPSS statistical analysis showed that Ga in C25 exists mainly in the inorganic state in clay minerals or aluminum silicate minerals. The preliminary analysis shows that the Ga accumulation in the Late Permian Longtan Formation in Nanwu mining area is controlled mainly by provenance, sedimentary environment and tectonic thermal evolution.
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    • References (15)
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