云南岩脚铅锌矿床深部盲矿预测的构造叠加晕模型

江城县岩脚铅锌矿床为中型、沉积—热卤水强改造矿床,成矿严格受地层和构造控制,铅锌矿床赋存于白垩系景星组下段地层中。文章系统研究了赋矿地层元素组合、矿床的元素组合及其相关性、成矿成晕的轴向分带及叠加特征,建立了深部盲矿预测的构造叠加晕模型,用模型对矿床深部进行了预测,提出了盲矿预测靶位,为进一步探矿增储提供了依据,取得了好的效果。

Structural superimposed halo model for prediction of deep concealed orebody in Yanjiao Pb-Zn deposit, Yunnan

The Yanjiao lead-zinc deposit located in Jiangcheng county, Yunnan Province, is a middle-sized sedimentary and strongly-reformed by hydrothermal brine type deposit, which is strictly controlled by strata and structures, the orebodies are hosted in the lower member of Cretaceous Jingxing formation. The paper systematically studies the elements combination and their correlation in the host strata and ore, and axial zoning superposition characteristics of mineralization and geochemical halo. The structural superimposed halo model for the prediction of deep concealed orebodies in the depth of deposit was established. The target position of the blind orebody was put forward, which provides the basis for further prospecting, which has achieved sounding results.