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1 Introduction Both the Qiziqiao Formation and Shetianqiao Formation,which controls the occurrence and distribution of a great deal of metal mineral resources,are extensively developed in southern Hunan province(Liu et al.,1998),showing quite important indicative significance to deep concealed metal mineral resources(Yu et al.,2003).The geochemistry characteristics of Devonian strata could not affect the spatial occurrence shape of orebody
1 Introduction Both the Qiziqiao Formation and Shetianqiao Formation, which controls the occurrence and distribution of a great deal of metal mineral resources, are extensively developed in southern Hunan province (Liu et al., 1998), showing quite important indicative significance to deep concealed metal mineral resources (Yu et al., 2003). The geochemistry characteristics of Devonian strata could not affect the occurrence number of orebody