| WuMa-XianQian area located in the southern margin of BanGongHu – NuJiang metallogenic belt.The ore deposits in this metallogenic belt have the characteristics of complex genetic types and rich mineral species,is a very important mineralogical study of hot spots.Newly discovered with NaTing deposit,located in the middle of WuMa-XianQian area.The work degree is low and lack of research data,it is necessary to further carry out the research work of mineralogy.Through field observation and indoor sample sorting,found major ore type disseminated,vein and composite vein.The mineralogy theory as a guide,through a microscope identification out the mineral composition,plagioclase,quartz,biotite,chlorite and so on 10 kinds of transparent minerals found,metal mineral of chalcopyrite,pyrite,sphalerite,galena,tetrahedrite and tennantite and so on 32,ore-forming elements in the deposit rich;chalcopyrite and 30,pyrite and 33,sphalerite and 19,tennantite and 17 kinds of mineral intergrowth and associated complex relationship,reflect mineralization has multi stage characteristics;find out there are 2 kinds of crystal structure of chalcopyrite,tetragonal column and its shape crystal,three types of reflectivity with Rvis=46 and 47 and 48;there are sphalerite-chalcopyrite,tennantite-chalcopyrite etc,4 kinds of solid solution separation structure,solid solution formation deposit characteristics show that there are at least four kinds of different temperatures and pressures change-stabilization of hydrothermal events.Through the analysis of the spatial location of the mineral and solid solution,the existence of the multi period hydrothermal superposition in the middle of the ore body was found.The structure analysis of the geochemical data by electron probe test,Chemical chalcopyrite types are As-Co-Zn,Se-As-Co-Zn,Se-Co-As and As-Co four categories,28 kinds of fine.Comprehensive chalcopyrite exsolution structure and chemical types,30 types of comprehensive division of chalcopyrite. |
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