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WANG Yong-hua, GONG Min, GONG Peng, XIONG Ran, ZHAO Bo, ZENG Jian-nian, MA Zhen-dong. 2010: Experiment of soil light hydrocarbon prospecting in Chengmenshan copper-polymetallic deposit, Jiujiang, Jiangxi, China. Geological Bulletin of China, 29(7): 1056-1061.
Citation: WANG Yong-hua, GONG Min, GONG Peng, XIONG Ran, ZHAO Bo, ZENG Jian-nian, MA Zhen-dong. 2010: Experiment of soil light hydrocarbon prospecting in Chengmenshan copper-polymetallic deposit, Jiujiang, Jiangxi, China. Geological Bulletin of China, 29(7): 1056-1061.
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Experiment of soil light hydrocarbon prospecting in Chengmenshan copper-polymetallic deposit, Jiujiang, Jiangxi, China

  • China University of Geosciences, Wuhan 430074, Hubei, China;2. Chengdu Institute of Geology and Mineral Resources, China Geological Survey, Chengdu 610081, Sichuan, China

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  • During the process of carrying out a new round of deep and periphery mining prospecting in Chengmenshan deposit, there are some limitations for the traditional geochemical methods. We've carried out a systematic measurement of light hydrocarbon at vertical soils profile of alterative and mineralized quartz porphyry within the mining area, surrounding quartz sandstone and on the soil line of 1-line, 9-line, J0-line. We try to trace the underlying mineralization information by using soil light hydrocarbon anomalies. The results show that, in addition to methane (C1), the soil light hydrocarbons (C2, C3, C4, C5), showing low value areas above the granodiorite porphyry body (ore), can be a good tracer of the underlying mineralization information and form a mosaic structure with the high-value of soil Hg gas and magnetic susceptibility. Through the analysis of characteristics and variation of overlying soil organic hydrocarbon components of sulfide ore body, we can put forward predictive indicators for the evaluation of the underlying ore bodies. It is helpful to understand the occurrence and evolution of organic matter in the process of mineralization.
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