陕西省宁陕县太山庙金矿床地质特征与找矿标志研究

Geological Characteristics and Prospecting Indicators of Taishanmiao Gold Deposit in Ningshan County Shaanxi Province

矿区大地构造位置位于南秦岭印支造山带北部留凤关-金鸡岭褶皱带东、西秦岭过渡部位偏东侧,奥陶系上统-志留系下统斑鸠关组是赋矿地层,F1断裂矿区的导矿构造,石英脉岩构成金矿主体,与成矿作用相关的围岩蚀变主要有硅化、黄铁矿化、磁黄铁矿化、褐铁矿化。本矿床成因类型为中—低温热液型金矿床,地层、岩性、构造、脉岩、矿化蚀变等找矿标志明显,研究结果对以后的地质工作具有很重要的参考作用。

The geotectonic location of the mining area is located on the east side of the transition zone between the eastern and western Qinling Mountains of the Liufengguan-Jinjiling fold belt in the northern Indosinian belt of the South Qinling Mountains. The Ordovician Upper System-Siliu system is a ore-bearing strata. The ore-forming structure of the F1 fault mining area, the quartz vein rock constitutes the main body of the gold deposit, and the surrounding rock alteration related to mineralization mainly includes silicification, pyrite mineralization, pyrrhotite mineralization and limonite mineralization. The genetic type of the deposit is a medium-low temperature hydrothermal gold deposit, and the prospecting marks such as stratum, lithology, structure, diagenesis and mineralization alteration are obvious. The research results have important reference functions for future geological work.