Metallogenic Geological Characteristics And Prospecting Prediction Of Zhongyuku Molybdenum Polymetallic Ore In Luanchuan

Zhongyuku molybdenum polymetallic deposit in Luanchuan is located in the South Margin ofNorth China Craton, The main outcrop strata is Sanchuan Formation, Nannihu Formation,Meiyaogou Formation of Luanchuan Group with the lithology of carbonate-clastic rocks. Mainfault structures in the region extend NWW-NE, magmatic activity is frequent, Geophysical field inthe study area shows high magnetic and low gravity anomaly characteristics; It is speculated that theanomalies were caused by deep concealed granite porphyry body, Molybdenum, tungsten elementanomaly extends NW in1:50000stream-sediment geochemical data of evident horizontal zoningcharacteristics. Comprehensive analysis of the geochemical land geophysical data, the study provesthat in deep parties of huge molybdenum polymetallic potentials.Five profiles in Zhongyuku area were selected to adopt1:10000CSAMT (controlled-sourceaudio frequency magnetotelluric), Some profiles were carried out with tectonic geochemical survey,changes in morphology of the concealed granite top interface were drawn out through deep drillingverification, the favorable occurrence position of Mo-W-Pb-Zn ore body were predicted, the spatialdistribution of ore bodies, concrete results and understanding are summarized as follows:1、In the deep part, Huangbeiling plutons and Yuku plutons is connected with each other,granite top interface morphology wave ups and downs as a whole, Northwest part is steep, thesoutheast is gradual, the middle area is a low-lying area, dipping toward the southwest.2、According to the drilling verification, concealed tungsten molybdenum polymetallic orebodies were found to be located at relatively low resistivity zone on CSAMT profile, porphyry oreupper interface often appear in the transition zone between the high resistance and low resistance.3、It is forecasted that there is a large scale tungsten molybdenum ore body in the Zhongyukuregion. Molybdenum tungsten mineralization area is about1km2, with the length is about1200mfrom east to west, and width is about800m from south to north. Ore bodies are mainly distributedin the inside and outside the contact zone of granite porphyry body.4、Spatial distribution of ore bodies are summarized as follows: In vertical, the molybdenumore bodies are mainly distributed in the inner and outer contact zone of concealed granitic plutons.Ore bodies are often thicker and richer at the top of the rock interface. Tungsten ore bodies are mainly distributed in skarn zones, which in the outer contact zone of concealed plutons. Lead-zincdeposit are located in the upperparts of the molybdenum tungsten ore bodies, further from concealedplutons; On the plane views, from Shibaogou to Huangbeiling plutons, ore body becomes thinnerfrom NW trend to NE trend, main metallogenic ores change from molybdenum to tungsten or zinc.