Geological Characteristics And Metallogenic Conditions Of Li Ziping Lead And Zinc Deposit In Lanping County,Yunnan Province

This work in collecting,on the basis of regional geology,miningarea geology data,through a large number of detailed geological work,fromtheorebodycharacteristics,orecharacteristics,orebody characteristics,orebody of roof and floor and wall rock alteration characteristics and metallogenic period and other aspects,divided into detailed analyzed yunnan Lan Ping County Li Ziping pb-zn deposit geological features.In addition,the comprehensive research and formation of ore deposits,magmatic rocks,structure,etc,on the basis of relationship between mineralization,summed up the yunnan Lan Ping County Li Ziping lead-zinc metallogenic regularities,and put forward has certain operability ore-prospecting criteria directly or indirectly,to yunnanLan PingCountyLiZipinglead-zincmineexploration evaluation and further in the area,the area of prospecting work to provide the corresponding theoretical basis.The main achievements and recognition are as follows:?1?Like most of the pb-zn deposit,Li Ziping also showed more obvious stratabound lead-zinc mine bed,no matter in which area,orebody tend towards fixed rock combination,will further illustrate mineralization and formation exist obvious causality.The lower section?J₂h¹?of the middle of Jurassic system is a set of clastic rock-carbonate rocks deposited by the sea and land cross-lagoon facies.Lithology combination of grey to light grey,gray,purple,purple,purple,green gray thin to middle of argillaceous siltstone,sandstone,fine sandstone and feldspar quartz sandstone with purple,violet black,khaki,grey mudstone and silty mudstone ranging from thick layer,local limestone and dolomite lens.One of the mineralization layers in the area.Jurassic middle flower group?J₂h²?in the upper left is a set of Marine facies sedimentary carbonate rock,rock combination of grey to dark grey,colored,gray to green grey thin layer to the massive limestone,middle bioclastic limestone,sandy limestone,argillaceous limestone,clip a thin layer of powder sandstone,calcareous siltstone and silty mudstone;With recrystallization,crumpled development and broken rock.Local silicification,calcite,one of the mineralization layers in the area.?2?The three ore bodies of li ziping lead and zinc deposit are not only controlled by the formation lithology,but also directly controlled by the structure,and the structure has the strongest influence.It is an important beneficial position for ore body to form a fault zone along the torsional layer,and the fracture zone derived from the main fracture?F1,F10?is a beneficial condition for the occurrence of ore body.?3?Li Ziping region has a unique advantage,the geologic condition is superior,the mineralization information is rich,has the development in the medium-and large-low temperature hydrothermal conveniences,lead and zinc polymetallic ore deposit in the region gathered many abnormal geochemical prospecting prospect is very good.In recent years,the exploration has been further deepened,and the prospecting space has been expanded.For area,next to the known ore body project on a tight leash,be sure to work step by step in accordance with established principles,in order to make clear the orebody scale and connection relationship,enrich the resource,and have not confirmed the unusually strong heart in-depth exploration and analysis,to tap new ore bodies,the further expansion of deposit.In terms of area,strengthen the comprehensive research on surrounding mines,the reason is that shows some features of the region and has been found that there are many similarities between the lead-zinc mine,there is the possibility of a large number of lead-zinc mine resources is very large,to become another large scale clusters.In addition,although the author has carried out practical research on the geological characteristics and metallogenic regularity of the deposit in this area,the research depth is not enough and the research foundation is weak.On the basis of comprehensive analysis of the existing problems and their causes,the feasibility of the following work in the region is put forward,which is as follows:According to the latest phenomenon of the survey found that,based on the above research results,to rethink the orebody delineated,further to explore the distribution characteristics of the ore bodies,smoothly provide powerful guidance for the mining and exploration.The study of the spatial three-dimensional zoning law of ore body is intensified.In recent years,geological experts at home and abroad have conducted extensive research and analysis on different types of deposits,and obtained a series of excellent results.The results show that the ore deposits show strong directivity in many aspects,which is an important breakthrough in the objective evaluation of deep mines.The comprehensive utilization of geophysical prospecting and drillingand geological comprehensive analysis should befully combined to provide a direction for further prospecting.The structure of the area is not very simple,and the mineralization characteristics are seriously controlled by the structure.At present,the characteristics of structural control are not explored.With the continuous improvement of the exploration technology and the further exploration,it has provided great convenience for this research.To this,butinthesubsequentworkcharacteristicsofthestructural ore-controlling regularity in targeted inquiry,at the same time around the structure of the effects of the regularity and large ore body and concealed ore body of further research.