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在城门山铜矿系统开展了土壤壤中汞、热释汞、全汞的测量。结果表明,花岗闪长斑岩和破碎带上覆的土壤中具有明显的壤中汞气、热释汞的富集,土壤中汞气的主要源是深部的硫化物矿体。汞异常能够准确地反映出下伏矿体的赋存部位。土壤全汞因为本底汞的影响不能很好地反映矿化信息,利用土壤全量汞与热释汞含量的比值来抑制本底汞,突显热释汞,能更清晰地显示深部的矿化信息,是示踪深部矿化信息的有用的地球化学指标。
In the Chengmenshan copper mine system, mercury, pyrolyzed mercury and total mercury were measured in the soil. The results show that the granodiorite porphyry and the crust-covered soil have obvious enrichment of mercury and pyro-mercury in the soil. The main source of mercury in the soil is the deep sulfide ore body. Mercury anomalies can accurately reflect the underlying parts of the ore body. Total mercury in soil does not reflect mineralization information well due to the background mercury, and the background mercury is restrained by the ratio of soil total mercury and pyrohydrin content, highlighting pyro-mercury, and revealing deep mineralization information more clearly , Is a useful geochemical indicator tracing deep mineralization information.