Geological Characteristics and New Prospecting Discovery of the Jinduicheng Superlarge Porphyry Molybdenum Deposit

The Jinduicheng superlarge molybdenum deposit is located at western Henan fracture-uplift area of the southern margin of North China platform. Same as the Shijiawan, Dashigou, Wengongling and Qinlinggou deposits, the Jinduicheng deposit is situated in the outside contact zone of Jinduicheng-Huanglongpu molybdenum ore fields. The formation of this deposit has close relationship with multiple sets of structure and porphyry body. The forms of ore body are basically identical as the ones of rock mass, but the ore body has branch phenomenon and its ore grade will be change from rich to poor as far from the rock mass. When the ore body is far away from the rock mass 600 meters, no mineralization occurred in wall rock, but some lead (silver) ore and gold ore bodies can be found there. Therefore, this deposit has a classical porphyry molybdenum metallogenic model. The differences and changes about geological characteristics of this deposit on longitudinal and latitudinal gradients will provide an important guiding significance for deep prespecting of the other molybdenum bodies in the outside contact zone of Laoniushan rock mass.