Research On The Characteristics Of Deep Structural Geochemical Anomalies And Prospecting Prediction In Songnan Area Of ??Gejiu

Gejiu Songnan District is located in Gejiu Super large tin copper polymetallic mining Area,Songshujiao ore field and Gaosong Ore field Junction,north to The South Slope of Heyeba protrusion,south to Kirin Mountain Fracture,east to the Lutangba Fault,west to Lotus Mountain Fracture,North Section of The Wuzishan duplex anticline,Masong Rock mass and Laoka rock body contact composite site.After years of exploration,it is shown that the deep part of Gejiu Songnan District has great prospecting potential.In this paper,the contents of 13 elements,Cu,Pb,Zn,Li,W,Mo,Mn,Bi,As,Sb,B,Sn and Ag,are tested by collecting tectonic samples along mining engineering and prospecting projects in the 1720 middle section,1630 middle section and 1360 middle section of Gejiu Songnan District.The combination of elements related to Sn element mineralization was selected by using factor analysis and R-type clustering analysis.The threshold values for each element combination are calculated based on the abnormal lower limit of the element.On this basis,the threshold contour graph of element combination contour graph and element combination in different middle section is plotted,and the favorable prospecting target area is selected by combining the geological characteristics and metallogenic law of the deposit in the deep part of Gejiu Songnan District.The main results are as follows:?1?Using factor analysis and R-type clustering comprehensive analysis,we know that:?a?The elements selected in the middle section of 1720 are:The F₁ combination is Pb-Zn-As-Sn-Mn;The F₂ combination is Cu-Bi-Ag-W-Sb-Mo;The F₃ combination is Li-B.?b?The elements selected in the middle section of 1630 are:The F₁combination is Cu-W-Mo-As-Sb-Bi-Sn;The F₂ combination is Pb-Zn-Mn-Ag;The F₃combination is Li-B.?c?The elements selected in the middle section of 1360 are:The F₁ combination is W-Mo-As-Bi-Sn-Sb;The F₂ combination is Li-Mn-B;The F₃combination is Pb-Zn;The F₄ combination is Cu-Ag.?2?The results of tectono-geochemical study in Gejiu Songnan District show that:The Metallogenic hydrothermal solution in the deep part of Gejiu Songnan District is mainly derived from the lower granite rock mass,and the main migration channels of metallogenic hydrothermal solution are NE,EW,NW fracture and its secondary fracture.In the SAG,deflection,interlayer fracture,granite interior,granite and surrounding rock contact zone,the groove near the rock strain,gentle slope,deflection and other favorable ore parts rich integrated ore.Element has a certain vertical stripe.?3?In the Deep part of Gejiu Songnan District,the complete stripe sequence of tectonic geochemical integrated axial division is from shallow and deep:W-Mn-Sb-As-Zn-Pb-Ag-Sn-B-Cu-Bi-Mo-Li.?4?Combined with the geological characteristics,metallogenic Law and the contour graph of the element combination threshold in Gejiu Songnan District,the Metallogenic prediction is carried out.2 favorable target areas are optimized in the middle section of 1720,2 favorable target areas are optimized in the middle section of1630,2 favorable target areas are optimized in the middle section of 1360.Among them,two target areas?B-2 target area in the middle section of 1630 and C-1 target area in the middle section of 1360?correspond to known ore bodies,which shows that the results of this study are credible.