Geochemical Characteristics Of Stream Sediments And Prospecting Direction Of The Zhong Zhaixiang And Shi Lipu Area In Minxian,Gansu

Zhongzhaixiang and Shilipu area is located in the west of Qinlin orogenic belt,between the North Qinling Caledonian orogen and the Qilian Mountain Caledonian orogen to the north and the Songpan-Ganzi Indonisian orogen to the south.The developed geochemical anomalies indicated a good metallogenic geological background in this area.Based on the collection and analysis of previous data,comprehensive research of regional geology and mineral resources survey,this paper discuss the geochemical characteristics of stream sediments and the regional geological situations in this area.Come to conclusions as follows :1.Through the 1:50000 stream sediment geochemical survey in the research area,this paper analyzed the distribution form,element combination form,element enrichment and dispersion rule of 17 elements in different geological bodies.It is pointed out that the main ore-forming elements is Au,Sb,As,Ag and Hg.This paper selected 98 single element anomalles,27 composite anomalies,9 integrated anomalies,among which are 1 type A,4 type B and 4 type C integarated anomalies.All type A and type B integrated anomalies and some of the class C integrated anomalies are analyzed and interpreted.2.According to the geological characteristics of this area,combined with geochemical anomalies discussed metallogenic prospect,preliminary delineation 4prospecting target areas and 4 metallogenic prospect areas.A grade prospecting target area 1(Yao Luba-Wu Maqiao),B grade prospecting target area 2(Yuan Shangou-Zha Magou,Yaogou),C grade prospecting target area 1(Xigou-Cao Pingliang).4metallogenic prospect areas as follows,Yuan Shangou-Zha Magou Sb,Hg,As,Cu II grade metallogenic prospect area,Xigou-Cao Pingliang Hg,Ag III grade metallogenic prospect area;Yaogou Au,Ti II grade metallogenic prospect area;Yao Luba-Wu Maqiao Au,Ti,Hg,As,I grade metallogenic prospect area.