In order to investigate the mineralization characteristics of Xiaonanchuan copper deposit in East Kunlun,the controlling factors of the deposit are analyzed and its genesis are explored after summarizing the regional geology,mining area geology and deposit geology of the copper deposit.The results show that Xiaonanchuan copper deposit is a hydrothermal sedimentation-stratified superim-posed copper deposit formed by hydrothermal jet deposition and hydrothermal superimposed transfor-mation.The main ore-bearing rocks of the copper deposit are sericular-green schist and calcrete felsic chylite of Halabayigou Formation in the Ordovician and Silurian Nachitai Group,and the brittle ductile shear zone between them controls the production of copper mineralization zone.The shapes of the copper deposit are stratiform,quasi-stratiform,long lenticular,lenticular and so on.Ore minerals are mainly malachite and copper blue,with small amounts of chalcopyrite,chalcocite,tetrahedrite,etc.The ore chemical characteristics show that the ore deposit is mainly copper oxide ore,with Co as an associated beneficial element.The results can provide basis for further regional metallogenic regu-larity and prospecting research.
Nachitai Grouphot water sedimentary typehydrothermal modificationXiaonanchuan depositEast Kunlun
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