桂西北微细浸染型金矿成矿地质特征及找矿远景区优选

“桂西北”是我国以微细浸染型金矿为主的重要金成矿集中区之一，具有重要的找矿前景和研究价值。本文通过对“桂西北”金矿集中区进行详细的野外地质工作，并以高龙、金牙两典型微细浸染型金矿床为主要研究对象，重点分析其地质特征、成矿地质条件，进而总结了研究区微细浸染型金矿的成矿作用机制、成矿模式。最后，结合桂西北地区特定的沉积古地理特征、构造、围岩蚀变等地质信息，已有的地球化学、矿产等资料以及前人研究成果，初步圈定了5个可供进一步找矿的远景区。

Geological features of micro-disseminated gold deposits and ore-search prospect areas preferred in northwestern Guangxi

Northwestern Guangxi, hosting major micro disseminated deposits, has significant prospect of ore search and research values. This article presents the detailed field work focused on the Gaolong and Jinya gold deposits, two typical cases in this region. It includes analyses of their geological characteristics, metallogenic geological conditions, and discussion on the mineralization mechanism and models. Finally, combined with the particular sedimentary paleo-geographical features, structure, and wall-rock alteration of this region as well as existing geochemical and mineral resource data, this work preliminarily delineates five prospective areas for further ore search in this region.