热带雨林景观区金属活动态的应用与研究——以老挝帕奔金矿为例  

Metal active status prospecting test in the tropical rainforest area of Lao People's Democratic Republic:a case study of Phapon gold deposit

作　　者：牛英杰[1,2] 金文强 陈泽锋[1] 陈京玉 沈九州[1] 刘智勇[1] 

机构地区：[1]天津华北地质勘查局,天津300171 [2]昆明理工大学国土资源学院,昆明590003

出　　处：《地质调查与研究》2017年第3期219-225,共7页Geological Survey and Research

基　　金：中央地质勘查基金项目"老挝琅勃拉邦省巴乌县帕奔金矿普查与勘探项目(201211B00200006)"

摘　　要：笔者在老挝帕奔金矿进行金属活动态测定试验,用石墨炉原子吸收法测定各相态金含量,分析研究土壤中元素各相态与其总量变化的关系,从而指导热带雨林景观条件下寻找隐伏金矿体。结果表明,处于热带雨林景观区的帕奔金矿区,上覆土壤中的Au、Hg主要以残渣态存在,水提取态和铁锰氧化物态含量偏低,土壤中相态的发育程度与赋矿围岩、土壤物化性质和元素本身的地球化学特性关联较大。金属活动态对老挝湿润热带雨林景观区寻找隐伏金矿床有较好的示踪指示作用。In this study, metallic active state measurement was carried out in the Phapon gold deposit. Graphite furnace atomic absorption was utilized to measure the gold content of various phases. Through analyzing the various phases of elements in the soil and the variation of their quantum, it can be guided to prospect berried gold orebodies in tropical rainforest. The result shows that Au and Hg in soils exist mainly in residual form, while few in water extraction form and Fe-Mn oxide form. The development degree of phases in soil is largely related to host rocks, physical and chemical characters of the soil, and geochemical characters of the elements. As a whole, metallic active state is a good indicator to prospect berried gold deposit in tropical rainforest of Laos.

关 键 词：金属活动态 帕奔金矿 热带雨林 老挝 

分 类 号：P595[天文地球—地球化学]