内蒙古正镶白旗东胡铅锌银矿地质特征及找矿标志

Geological features and prospecting indicators of Donghu lead zinc silver deposit in Zhengxiangbai Banner, Inner Mongolia

东胡铅锌银矿赋存于侏罗系上统满克头鄂博组(J3mk)地层中,受北西西向张扭性断裂构造控制,矿床的主要有用元素是Ag,共生有Pb、Zn、Cu元素,在矿体的局部地段Ag、Pb、Zn互为伴生,矿床受地层、构造控制,其中,构造控矿尤为明显,属于与中生代火山热液有关的浅成低温热液矿床,矿体的形成方式以充填作用为主,交代作用次之。指出今后找矿工作应特别注意北西向次生张性断裂及有铁锰矿化、绿泥石化、高岭土化的发育地段。

Donghu lead zinc silver deposit occurre in Manketouebo Formation （J3mk） of the upper Jurassic Series ,it is controlled by NWW trending torsional-tensional fractural structural. The main useful element of deposit is Ag, the symbiotic elements are Pb, Zn and Cu, Pb, Zn and Ag are associated with each other in the local area of the ore body, the deposit is controlled by strata and structures. Among them, the ore controlling structure is particularly evident ,it belonging to epithermal deposit that related to Mesozoic volcanic hydrothermal fluids. The main factor of mineralization is the filling effect, the replacement is secondary; It is pointed out that prospecting target should be paid close attention to the area of north west trending secondary fracture, Iron manganese mineralization, chlofitization and kaolinization in the future.