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Volume 19 Issue 4
Aug 2008
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Qing-lin XIA, Peng-da ZHAO, Qiu-ming CHENG, Yong-qing CHEN, Sheng-yuan ZHANG. Platinum and Palladium in Coal Rock and Geochemical Anomaly in Eastern Yunnan Province, Southwest China. Journal of Earth Science, 2008, 19(4): 354-362.
Citation: Qing-lin XIA, Peng-da ZHAO, Qiu-ming CHENG, Yong-qing CHEN, Sheng-yuan ZHANG. Platinum and Palladium in Coal Rock and Geochemical Anomaly in Eastern Yunnan Province, Southwest China. Journal of Earth Science, 2008, 19(4): 354-362.

Platinum and Palladium in Coal Rock and Geochemical Anomaly in Eastern Yunnan Province, Southwest China

Funds:

the State Key Laboratory of Geological Processes and Mineral Resources of China GPMR2002-13

the Project of China Geological Survey 200310200082

More Information
  • Corresponding author: XIA Qing-lin, Email: qlxia@cug.edu.cn
  • Received Date: 28 Mar 2008
  • Accepted Date: 28 May 2008
  • A series of geochemical anomalies of Pt and Pd were found in 1 358 recombined samples from a geochemical stream sediment survey in eastern Yunnan (云南) Province, China. Chemical optical emission spectroscopy, X-ray fluorescence analysis, and inductively coupled plasmas atomic emission spectrometry analyses of 22 elements and chemical compositions of 21 samples from coal-bearing strata from the Late Paleozoic, Mesozoic, and Cenozoic show Pt and Pd concentrated to some extent in coal rocks, with Pd/Pt < 1. As, Pt, B, Au, Pd, V, Sb, U, Pb, and W are enriched in the Lower Carboniferous coal-bearing strata of the Wanshoushan (万寿山) Formation; B, Mo, As, Pt, U, W, Pb, Pd, and V are enriched in the Lower Permian coal-bearing strata of the Liangshan (梁山) Formation; Pt, Cu, Mo, Pd, As, V, and Ag are enriched in the Upper Permian coal-bearing strata of the Xuanwei (宣威) Formation; As, B, Pb, Pt, Pd, U, W, Sb, Mo, Zn, and Ag are enriched in the Upper Triassic coal-bearing strata of the Xujiahe (须家河) Formation; and Pt, As, and Pb are enriched in the lignite of the Pliocene Ciying (茨营) Formation. Combining analyses of the sedimentary environment and local volcanic activity reveal that the coal- bearing strata in the Xuanwei Formation are possibly related to the Permian Emeishan (峨眉山) basalt.

     

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