Study On Mineralization Characteristics Of Nagengkangqieer Sliver Deposit In Qinghai Province

Because of the insufficient research on the mineralization characteristics in Nagengkangqieer sliver deposit,the paper did systematic research on the mineralization characteristics of study area,which its methods are of petrology?mathematical statistics?big data information extraction and GIS based on the “General Survey of Nagengkangqieer sliver deposit in Dulan County,Qinghai Province”.The research contents mainly included: ore characteristics?single element mineralization characteristics and characteristics of combined element.Combined with the previous research,the paper summarizes the mineralization characteristics,discusses the genesis of the deposit,that are provided for the next action of prospecting.The conclusion are the following parts:The ore structure is relatively uniform,which reflects the fragmentation of the surrounded rock,and the hydrothermal is characterized by the fracture filling along the later stage.According to the filed geological research,these are Au?Ag-Ag?Pb?Zn-Pb?Zn?Ag-Pb?Zn?Cu?Ag belt from the deep to the surface,that suggested the ore-forming temperature has a trend of low to high.The mineralization characteristics of single element reflect the uneven mineralization in the study area,and there are multiple mineralization centers.Most of the lean ore and rich ore are concentrated in the center of the study area;the mineralization is discontinuous in the vertical direction,Ag,Pb and Zn are in a distinct zone feature in the vertical direction.The combination of mineralization elements reflects the complex type of mineralization in the study area,and the types of mineralization combinations are not selective for rocks.Combined with the previous research,the deposit is hydrothermal type,the mineralization process is influenced by multi-phase hydrothermal activities.According to the actual field geology and the characteristics of the mineralization,there is a close spatial relationship between the mineralized section and the large-scale rock mass,and there is obvious zone on the plane of the mineralization section of each element.The scale is outwardly oriented as Zn,Pb,Ag,Au;vertical direction from the bottom to the top,Zn,Pb,Ag,and Au are banded,and it is indicated that the hydrothermal fluid comes from the deep magma.Based on the characteristics of the mineralization,the main channel of hydrothermal migration may be located in the deeper part of the core of the study area;the mineralized section has a close spatial relationship with the shallow rock mass,so the shallow rock mass is most likely to form ore near the back axis.