Structural Characteristics and Mineralization of Xuejiping Porphyry Copper Deposit in Northwest Yunnan
Received date: 2018-04-26
Revised date: 2018-07-10
Online published: 2018-10-17
Xuejiping copper deposit is located in the southern part of Yidun-Zhongdian arc belt,which is a typical deposit of porphyry mineralization in the Indosinian period.The ore-control structural characteristics of Xuejiping copper deposit was systematically analyzed,which shown the orebody’s outputting is strictly controlled by the NW-NNW fracture and fold structure and the formation of ore is closely related to the Indosinian tectonic-magmatic activities.The joints (fissure) are more developed and have a lot of pyrite± chalcopyrite+quartz vein filling in ore-bearing porphyry.Metal sulfides such as pyrite and chalcopyrite are mainly filled along the joint (fissure) to form a large number of metal sulfide veins and fine veins,which shown that there is a close relationship between the developmental intensity of pyrite and the development of cracks in the rock mass.In addition,the effective delineation of limestone strata in Xuejiping mine area indicates that intrusive contact between limestone and quartz diorite porphyrite.Coupled with the extensive magmatic hydrothermal activity in the region,it should be believed that the basic conditions of skarn orebody formed,the results and provide a scientific basis for the mineral exploration.
Xuelong LIU , Fucheng YANG , Changzhen ZHANG , Ying LUO , Shuaishuai WANG . Structural Characteristics and Mineralization of Xuejiping Porphyry Copper Deposit in Northwest Yunnan[J]. Gold Science and Technology, 2018 , 26(4) : 473 -480 . DOI: 10.11872/j.issn.1005-2518.2018.04.473
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