四川木里烟依金矿区土壤地球化学特征及找矿预测

烟依矿区位于我国重要的金成矿区带甘孜-理塘构造结合带南段，紧邻梭罗沟金矿，在对烟依矿区进行1:10000地质草测，基本查明该矿区地质条件，在此基础上，对矿区开展1﹕10000土壤地球化学测量工作。通过样品Au、Ag、As、Sb、Hg五种微量元素含量特征分析，显示Au元素为测区内成矿有利元素。使用数理统计软件对样品5种元素进行降维，划分出Au-As-Sb和Ag-Hg两组元素组合，对组合元素采用衬度累加法进行数据处理，对单元素异常图和组合元素异常图进行套合，并结合地质成矿条件共圈定了4个成矿靶区，通过探槽工程对靶区YY-2和靶区YY-4进行验证，确定了Au1和Au2两条金矿化体，显示了本区金土壤地球化学找矿的有效性。

Geochemical characteristics of soil and prospecting prediction in the Yanyi gold mining area, Muli, Sichuan Province

The Yanyi mining area is located in the southern section of the Garze-Litang structural joining zone, an important gold metallogenic belt in China, neighboring the Suoluogou gold deposit. On the basis of the geological survey of 1: 10000 in the Yanyi mining area, this work carries out a soil geochemical survey of 1:10000 in the mining area. The analysis of the content characteristics of five trace elements Au, Ag, As, Sb and Hg shows that Au is a favorable element for mineralization in the survey area. Mathematical statistics software is used to reduce the dimension of five elements of the sample, and two groups of element combinations Au-As-Sb and Ag-Hg are divided. The contrast accumulation method is employed to process the data of combined elements, the single element anomaly map and the combined element anomaly map are superimposed, and four ore-forming targets are delineated according to the geological ore-forming conditions. The targets YY-2 and YY-4 are verified by trenches, and two gold mineralization bodies, Au1 and Au2, are determined, which shows the effectiveness of geochemical prospecting in gold soils of this area.