Petrological Characteristics And Prospecting Significance In ZK019 Of Yongping Jiangxi Province

Yongping mine area is in the north of wuyishan metallogenic belt,which is located in the Yangtze plate and cathaysia splicing zone,and located in pingxiang-guangfeng deep fracture to the south of the late Paleozoic crack slot.Yongping mine area is one of "five golden flowers"which include Dexing copper mine,Chengmenshan and so all in jiangxi copper mountain,which contains rich copper,lead,zinc,and metal mineral resources.Through studying the ZK019 of in Yongping jiangxi provinice,we find mylonitization has hanppend in wall rock,including mylonite,mylonite geniss,mylonite gneissoid granite,phyllonite,mylonite limestone,Marble,mylonite sandstone and so all,the sorts of alteration are biotitization,sericitization,quartzification,chloritization,epidetization,carbonation,fluoritizatio,pyritization,copper,galena,sphalerite,magnetite,pyrrhotine,ilmenite ect,most of mineralize exist with later hydrothermal minerals such as biotitization,sericitization and so all,metal mineral did not happen deformation,and most in contaminated shape or along the fissure filling,according to the principle of oblique or gneissosity directional distribution.Diorite and ore-forming may be relevant because mineralize obviously enhance in diorite or its upper wall.In wall rock,the variety of muscovit is phengit,Fe or Mg is rich in biotite,and the kinds of garnet are almandine,but andradite is rich in ore deposit.Quartz-feldspathic is K-high calcium alkaline granite,in which silica and aluminum are supersaturated,diorite is attributed in Partial aluminum,K-high calcium alkaline or alkaline.In this paper,magmatic zircon U-Pb year in the ZK019 granite results is shown,it is 637～832Ma,it is granite’s formation age,metamorphic zircon U-Pb year in the ZK019 granite is 440.5±1.7Ma,it is shown that the age of granite’s migmatization is Caledonian,combined with trace elements in the geochemical characteristics,we infer that structural background for yongping area was continental margin arc environment,diorite was formed with pushover structure which was the result of Izanagi plate diving under the Eurasian plate in Yanshan period.Mylonitization has hanppend in wall rock,but ore body didn’t,it shows that metallogenetic epoch Later than tectogene,the pushover structure provides space and shielding layer for the formation of the ore deposit,so genetic types of mineral deposit for yongping copper mine is hydrothermal copper ore deposit.