Characteristics of geochemical anomaly of the Tangjiaping molybdenum deposit and its prospecting indicators in Shangcheng,Henan

The Tangjiaping molybdenum deposit in Shangcheng County is a large-scale molybdenum deposit explored in Dabieshan region in recent years.The study on the characteristics of geochemical anomaly has proved that the content variation of metallogenic elements is closely related to the space position of granite porphyry bodies,rock types and alterative features;in 3D space,the distribution of geochemical anomaly is controlled strictly by the porphyry bodies;the concentration zoning of the molybdenum anomaly are very distinct with the inner zone indicating the location of the molybdenum industrial orebodies,the middle zone reflecting the marginal orebodies and the range of strong mineralization,as well as the external zone showing the boundary of slight mineralization and the mineralized alteration.Based on the analysis and research of the metallogenic background, geochemical parameter of indicating elements and the characteristics of geochemical anomaly,the paper has established geological and geochemical prospecting indicators.