Geological Characteristics Of Youlugou Silver-lead Deposit In Songxian，henna And Its Prospecting Orientation

Songxian baihe area locates at east-south of The Xiong’er Mountains region,is a bear ears mountains. The Xiong’er Mountain region is the East Qinling orogenicbelt into a major non-ferrous metals and precious metals mining. Coupling withtectonic regime transition and lithosphere thinning pccurred during activities andformed lots of deposits withdifferent types.A detachment-metamorphic core complex occurred in Xiong’er Mountainsduring Mid-Paleozoic extensional tectonics,and the stratum of its core are mainlycomposed of Ductile shear belt. Ductile shear belt in the Middle PaleozoicErlangping Group internal shear. Large areas of silver, galena and ductile shear zonesand mylonites close, in the spatial distribution constructed by the ductile shear zonecontrol.Inside the main Central and asphalt ditch mine ore bodies (veins) are ductileshear zones and fault control. Ductile shear zone north east of the ore body (veins) toAg-Pb-based, taste moderate; ductile shear zone in south western ore body (veins) togold-based, taste slightly lower; ductile shear zone within the ore body (veins) togold-based, taste is very low.Asphalt into a ditch mine minerals from the deep crystalline basement floor thatis wide group of metamorphic rocks. Kuan Ping Group metamorphic rocks of theoriginal rock-based nature of the acid volcanic rocks and some sedimentary rocks,material mainly from the mantle, its gold, silver, lead and high content of heavymetal components.Ore-controlling mechanisms in this area there are mainly two: ductile shearzone and the second-class ore-ore-controlling fault.