老挝Xiangkok地区金矿找矿前景浅析

老挝Xiangkok地区位于Ⅱ级澜沧江弧形构造带在金三角地区的大拐弯处，属于西盟一临沧成矿带的南延。本区分布有大量民采过的金矿（化）点。区内Ⅰ型花岗岩类发育，其主要围岩是时代不明的粉砂岩与页岩互层。区内初糜岩化的韧性剪切带发育，并往往叠加了脆性断裂。Xiangkok金矿点金矿化体主要赋存于花岗闪长岩及其围岩的破碎带和叠加了脆性断裂的剪切带中，呈含金硫化物石英脉、含金硫化物硅化角砾岩产出，可能属与花岗岩有关的构造蚀变岩型一石英脉型金矿。从现有资料分析，Xiangkok地区金矿有着良好的找矿前景。

The prospective of gold deposit exploration in Xiangkok area,Laos

Xiangkok, in Laos, is located in Ⅱ -grade Lancangjiang arc structural belt at the comer of golden triangle area, which belongs to southward extending of Ximeng - Lincang metallogenic belt. There is a large number of private mining gold spots in Xiangkok area. Ⅰ - type granitoid is widespread and its main wall rock is undating interbed siltstone with shale. There distributed many ductile shear zones which are primary mylonization, and which are usually superimposed brittle fracture in the area. The gold mineralized bodies in Xiangkok gold occurrence hosting mainly in the fracture zones in the granodiorite and wall rock as gold bearing sulfide quartz vein , gold bearing sulfide breccia. The above characteristics show that this gold occurrence could be structural altered rock - quartz vein type of gold deposit which is related to granite. It indicates that it has a good prospecting potential in Xiangkok area by analysis on ore - forming geological conditions.