3D geological and geochemical features and metallogenic prognosis of Chengmenshan copper deposit, Jiujiang, Jiangxi, China.

By using of the original data of 326 drill holes of Chengmenshan copper deposit, we can build 3D geological and geochemical model through 3D visualization system MAPGIS-TDE, and combining mathematical model for deep mineralization forecast. The results showed that the main body in the deep of Chengmenshan copper deposit is later quartz porphyry, and early granodiorite porphyry is a large "xenoliths" in the quartz porphyry. The occurrence of stratiform massive sulphide ore body existed in fracture zone and unconformity surface between Wutong Formation and Huanglong Formation is slowing down in the deep area, and there is an increasing trend near the core of syncline. We'd look for porphyry molybdenum and stratiform copper-pyrite as the major direction of exploration in the deep area of Chengmenshan copper deposit. There are about 500000 tons of copper resources (Cu ≥ 0.3%) and 200000 tons of molybdenum resource (Mo ≥ 0.04%) in the secondary space (-500 ~-1000m), and implementation of the deep drilling project is proposed in the No.0-102 exploration line profile within the mining area.