地质调查与研究2016，Vol.39Issue(3)：184-190,7.
老挝爬奔金矿围岩蚀变特征及其与金矿化的关系
Characteristic of wall rock alteration and its ralation with gold mineralization of the Phapon gold deposit in Laos
摘要
Abstract
Phapon gold deposit is located in the west of central Laungprabang island arc. Ore body occurs in thick-huge thick limestone in Carbonic-Lower Permian and controlled by the NW-NNW striking faults . It is middle-low temperature hydrothermal deposit. On the basis of the field geological investigation, mineral micro-structure study and the alterated rock element content, we studied the correlation of wall rock alteration with gold mineralization. It is suggested that wall rock alteration takes middle-low temperature alterated mineral association as silicide, limonite, siderite ore and calcite.With alteration strength increasing, the Au, Si and Fe elements are increasing, but Ca decreasing. The alteration is controlled by faults, and the alternation is with obviously zones, which formed different ore types. Multiple alternation overlay is favorable for mineralization. The unique wall rock alternation of“redden”and“bleaching”is obviously indicator for deposit, which will guide for gold prospecting both in periphery and adjacent areas by combining with the structure, stratum and geochemical anomaly.关键词
金矿/蚀变与矿化/红化与褪色/爬奔Key words
gold deposit/alteration/mineralization/redden and bleaching/Phapon分类
地质学引用本文复制引用
史老虎,薛兰花,孙宏岩..老挝爬奔金矿围岩蚀变特征及其与金矿化的关系[J].地质调查与研究,2016,39(3):184-190,7.基金项目
国外矿产资源风险勘查专项基金项目“老挝琅勃拉邦省巴乌县金铜多金属矿普查和详查（201211B00200006）” （）
