老挝南部地区红土风化壳残余型铝土矿矿床成因分析及找矿

老挝南部地区红土风化壳残余型三水铝石铝土矿是第四纪玄武岩建造风化成矿,以红土风化壳残积层组成为特征。区内铝土矿资源十分丰富,矿床规模大、质量佳、覆盖薄、宜露采。是国内罕见的单一型三水铝石铝土矿矿床类型,是理想的优质铝土矿资源开发基地。笔者近几年来通过对老挝占巴色地区铝土矿地质的找矿勘查工作,通过收集占巴色周边的阿速坡、色贡等地区红土型铝土矿资料,对老挝南部铝土矿成矿区红土风化壳残余型三水铝石的成矿地质条件、矿床产出特征、成矿机理及找矿思路进行探讨和分析。

Analysis of the Genesis of Ore Deposits and Prospecting of Bauxite of Residues Type of Weathering Crust of Laterite in Laos's the Southern Region

Gibbsite-bauxite of residues type of weathering crust of laterite in Laos's the southern region is the bauxite ore formed by weathered basalt of quaternary period, is characterized as the residues layer-weathering crust of laterite. The region is very rich in bauxite resources, the deposit is large in scale, good in quality, thin in coverage, will be easy in open-mining. It is the rare single-gibbsite bauxite deposit, is an ideal base for the development of high-quality bauxite resources. In recent years, the authors try to carry out the analysis and discuss on the geological conditions, the output characteristics of the ore, ore-forming mechanism and exploring ideas in gibbsite of residues type of weathering crust of laterite in Laos's the southern region through exploration work to geological prospecting bauxite of Laos's Champasak areas, and by the data-collecting of laterite-bauxite in Attapeu around Champasak, Gong-color and other regions.