舟曲县羊里尾沟金矿地质特征及控矿因素分析

羊里尾沟金矿位于西倾山—南秦岭陆缘裂谷带西段的白龙江复背斜北翼,尖尼—刀扎—洛大—憨班区域断裂带上,是西秦岭西段近年来勘查发现的大型金矿床之一。区内出露古—中生代地层,金矿体主要赋存于石炭纪益哇沟组地层中。勘查区构造复杂,矿体受断裂控制明显。通过对成矿地质背景、矿床地质特征、矿石成分、控矿因素等的综合研究,认为该矿床为中低温热液微细浸染型金矿床。

Geological Characteristics and Ore-Controlling Factors of Yangliweigou Gold Deposit in Zhouqu County

The Yangliweigou gold deposit is located on the northern wing of the Bailongjiang complex anticline in the western section of the western slope of the continental margin of the South Qinling continental margin.It is one of the large gold deposits discovered in recent years.There are exposed paleo-Mesozoic strata in the area,and gold orebodies are mainly found in the strata of the Yiwagou Formation of the Carboniferous.The structure of the exploration area is complex,and the ore body is obviously controlled by faults.Through comprehensive research on the ore-forming geological background,the geological characteristics of the ore deposit,the ore composition,and ore-controlling factors,the deposit is considered to be a medium-low temperature hydrothermal fine dissemination type gold deposit.