Soil Geochemical Characteristics Of Donggou Gold Deposit And Its Ore Prediction In Xia County, Shanxi Province

Dongou gold deposit study of xia county,Shanxi province is located in the South of the city of North China plate contact zone of Ordos and Huai River blocks south,middle section of Taihang mountain area in zhongtiao mountain ridge. Formation outcrops than the whole,structure development,magmatic activity is strongly,So there is have an ore-forming geological conditions. The 1:10,000 soil geochemical survey, to be combined with previous geological research and exploration of geological features and to determine the most favorable location,identify the most powerful metallogenic and summarizes the geochemical characteristics. Work provides the most compelling evidence for further exploration and prospecting directions.In this article,Firstly summarized the area of geological background and statistics and analysis the soil elements concentration Clark,coefficient of variation,skewness and so on.Through on soil of exploration data statistics analysis have unearthed thick set Clark value is greater than 1 of elements followed by is Zn,Au,w,Ba,Bi,Pb,As,Sb,Hg,description the class elements has must secondary rich set tendencies,which Hg,Sb,As,Pb,rich set degree high; elements coefficient is greater than 1 of elements has Au,Ag,Pb,Sb,showed that research district soil in the these elements distribution not uniform,discrete degree big,points heterosexual strong,has rich set of trend,Ore more favorable geochemical conditions of Ag,Cu,Pb,Au,Mn,Sn six elements which skewness values is large,suggesting they may be subject to later geochemical role of impact,its content is not normally distributed in the body.And through each geologic unit statistics in the study area,we can draw the structure fracture zone ore element content is significantly higher than that of other units.Through comparative analysis of iterative method,cumulative frequency,box plot method in geochemical data-processing,and the anomaly threshold. From which to choose the most practical anomaly threshold values. Complete 16 geochemical maps of geological software and 16 pieces of geochemical anomaly maps. Which:exception points number more of elements for Zn,Hg,Cu,Mo,Ag,As,Pb,Au,Sn,,most elements reached 3 level concentration with,which strength high of elements has Cu,Au,Pb,elements; most elements of exception more dispersed,exception scale differences larger,exception thick set Center more obviously; each elements exception distribution has must of regularity.On measuring district soil geochemical data for multiple statistics analysis,from elements correlation analysis can obtained Au and As,Bi,Hg,Ba,Cu,w related sex strong,so these elements can as directly find mine of indicates elements; from poly class analysis can divided out Ag①,Pb,Zn,Mo; ② Co,Ni,Cu,As,Sb,Bi; ③Mn;④Ba,w,Hg,Au; Sn⑤,5 species elements combination Through factor analysis can be seen from the perspective of fellowship Au is positively correlated with F3,F4,Hg,Ba,w and Au,As,Sb,Bi relationship closely. Negatively correlated with the F1,F2,F5,therefore Auand Co,Cu,Mn,Ni,Ag,Pb,Zn,Mo,Mn,Sn relations doesn’t close. In short combinations of various elements and their associated degree can reflect the main characteristics of supergene enrichment of ore-forming elements.Based on its comprehensive soil geochemical anomaly characteristics analysis of synthetical anomaly AP7 elements combined Ag,Pb,Au,Hg,Zn,Mo,and Cu,Sb,and As,and w,SN,Bi,∑ NAP value of 16.74,ordered 1. Exception is located in the area along the east Donggou,the corresponding marble formations,unusual elements combined complex,characteristics in high temperature and low temperature element in the performance,characterized by moderate elements,can also be considered superficial deposits and erosion,made up of 46 element anomaly,anomaly in the structure transition at the medial,metallogenic conditions are favorable,and great potential.General exception on the basis of the relevant geological and ore prospecting in the background, is located in Central Mining District, and area of about 8.9km2. Lithology prediction of targets mainly sericite schist,dolomite,marble,quartzite; target area development has two structural fracture zone,according to the geochemical characteristics and statistics,discovered gold mineralization is mainly happening in the region and therefore has a close relationship with this fracture zone of gold mineralization.