Ore-hosted Metamorphic Rocks and Its Geological Significance of the Baoertu Copper Deposit in Xinjiang

Near the Baoertu-Kumux faults, Baoertu copper deposit near the Baoertu-Kumux faults is in the north area of the Wushitala Mountain named uxxaktal in HeShuo Heshuo County. The copper ore body bodies mainly occur in the metamorphic rocks of the Xingxingxia group (Chxn) of Mesoproterozoic Changcheng System. It is close to the axis of the minor anticline named Aimutaiwula and it is obviously controlled by the faults. This sub-group stratum stratum has a gradually transition transited from amphibolite facies to greenschist facies from the axis of the anticline to its wings. Metamorphic rocks in the mining area not only have the chemical characteristics of neutral-acidic volcanic rocks but also have the characteristics of sedimentary rocks.Its type, which belongsbelong to the transition type of sedimentary rocks to igneous rocks. The stratigraphy, petrography and geochemical features of the metamorphic rocks in the mining area indicate that its original rock should be a combination of marine neutral-acidic and basic pyroclastic rocks. Metamorphism in this study area is dominated by regional metamorphism and superimposed dynamic metamorphism in its late stage. Metamorphism has played an important role in the formation of this deposit.