广西金牙金矿地球化学特征及其找矿意义

Geochemical anomalies and its prospecting significance of Jinya gold deposit,Guangxi,China

广西金牙金矿是滇黔桂"金三角"区内的一个大型微细粒浸染型矿床。本文通过对大量原生晕样品分析数据处理,总结了矿床地球化学异常特征。认为该矿床以发育Au、As、W、Sb、Pb等元素异常为特征,其中Au-As-W组合代表了主期的成矿成晕作用,是本矿区金矿化的主要指示元素。Au、As、W元素在空间展布上沿倾斜方向往北斜列或含量变化趋势沿走向往北增高,进而提出各矿体的北西段深部具有找矿前景。

Guangxi Jinya gold deposit is a large micro-disseminated deposits in ＂golden triangle＂ area of Yun- nan-Guizhou-Guangxi provinces. Based on processing the large number of primary halo sample analysis data, the deposit geochemical anomalies are summed up. It is considered that the deposit is characterized by element anomalies of Au, As, W, Sb, Pb and so on. The Au, As, W are the main ore-forming and halo-forming elements, and the main indicator elements. The Au, As, W elements along the direction of dip north cascade or the strike of content change tendency to north increased, which indicated that the depth of northwestern of ore-bodies are most favorable prospecting area.