Geological Features and Metallogenesis of Cu-Ni Deposit in Basic-to-Ultrabasic Zone of Huangshan,Hami Area

The Cu-Ni deposit in Huangshan basic-to-ultrabasic complexs confined to the EW Kanggur ductile shear zone is an important Cu-Ni metallogenic belt of East Tianshan Moutains.It includes three medium-large sized Cu-Ni deposits as West Huangshan,East Huangshan and Xiangshan.The ore bodies locating in the middlelower and phase change positions of ultrabasic rock body is poor in silicon and rich in iron,magnesium in late Variscan,which are generally concealed,platy,lenticular and distributed in groups.The ore bodies are mainly composed of metal sulfides exiting as pentlandite,violarite,and copper ores dominated by chalcopyrite.The Cu-Ni deposit related to basic-ultrabasic rock body is a product of ascending and emplacement of a common parental magma-upper mantIe magma,which is a tipical magmatic liquation-injection Cu-Ni deposit.