Geochemical Exploration Of The Zhang Longgang Area, Insongxian Country, Western Henan Province

This paper is based on the research of 1:200000 stream sediments, regional 1:50000 stream sediments and the content of 1:5000 soil elements in Zhan Longgang exploration area. And the geochemical map and geochemical abnormal maps of each elements were drew on the limit of the anomaly is determined by using the 7 grade anomaly classification scheme. On the basis of element anomaly characteristics, the prospecting indicator elements and prospecting direction were made, and also the ore prospecting target area were delineated. This paper mainly obtains the following understandings.The Zhan Longgang exploration area is located in the southeast of Xiong′ershan region, which count for 4.27km2. Exposed stratum in the area is mainly composed by Xiong’er Group Ping egg group, mainly controlled by NE trending faults. In the exploration area, the quartz veins were developed slowly, and the alteration was mainly of the potassium, potassium, and no obvious mineralization phenomenon was found.Through analyze 1:200000 stream sediments element in exploration zones, used 7 abnormal division scheme to determine the lower limit of anomalies and anomaly classification, comprehensively analyze the geochemical maps and geochemical anomaly map of each element. It can be found that Zhan Longgang exploration area exist Mo element anomaly, and the anomaly distributed in the north of Zhan Longgang exploration area, which level is low.Through analyze 1:5 million geochemical census data of the exploration area, used 7 abnormal division scheme to determine the lower limit of anomalies and anomaly classification, comprehensively analyze the geochemical maps and geochemical anomaly map of each element. It can be found that the prospecting indicate elements of Zhan Longgang exploration are Mo, Au, Pb, Zn, Bi. The abnormal level of Au element reach for Level 2, distributed in the eastern region of exploration area. Mo develops grade 2 anomaly and distributes in the north of exploration area.Through analyze 1:50000 soil geochemical data of the exploration area, used 7 abnormal division scheme to determine the lower limit of anomalies and anomaly classification, comprehensively analyze the geochemical maps and geochemical anomaly map of each element. It can be found that the prospecting indicate elements of Zhan Longgang exploration are Mo, Au, Pb. The abnormal level of Mo element reach for Level 4. The abnormal level of Pb element also reach for Level 3, distributed in the north of exploration area. Au develops grade 3 anomaly and distributes in the center of exploration area.With anaylsis from the geochemical investigations of different scale in Zhan Longgang exploration area, according to the comprehensively analysis of Element combination anomaly, three ore prospecting target areas in Zhan Longgang exploration area are identified: T1 target area is located in the northeast of Zhan Longgang(northeast of King ditch- Cang Gou), the prospecting direction is: Mo, Pb; T2 target area is located in the North- Central of Zhan Longgang(northeast of Cai Gou),the prospecting direction is: Au, Mo; T3 target area is located in the center of Zhan Longgang(Fang Gou-Ying Le Gou), the prospecting direction is: Au, Mo. The order of its ore prospecting priorities is: T1â†' T3 â†' T2.