Genesis and Characteristics of Copper Deposits in Fenghuoshan Mountains

Copper deposits of the Fenghuoshan area geologically occur in the western portion of the Sanjiang nonferrous and noble metal mineralizatin belt,which is well known in China. The previous backward work hinders the study of the mineralization settings and genesis of the deposits. Recently,as geological survey and mineral resource exploration are carried out,some general geological information has become clear. As a result,sedimentary circumstances of the Fenghuoshan group,its sequences and the ore-bearing strata as well as the deformation sequences have been determined. Based on field work,we have analyzed the characteristics and genesis of the copper deposits. It is suggested that the Fenghuoshan copper deposits are hosted by sandstones,the ore bodies usually appear in grey and thick to intermediate thick,fine-grained quartz lithic sandstones intercalating with thin carbonaceous mudstones.