栾川县黄沟金矿地质特征及找矿潜力分析

熊耳山地区位于华北地台南缘华熊台隆内的熊耳山断隆区,该区构造活动强烈,岩浆活动频繁,是我国主要的岩金矿产地之一,蕴藏着丰富的金属矿产资源。黄沟金矿区位于熊耳山矿集区西部,与该区众多已知矿床具有相同或相似的成矿背景条件。通过对黄沟金矿区域成矿地质背景及地质特征的研究,结合在该区初步工作取得的找矿成果,确定该区金矿的控矿构造主要为穿层断裂带及受区域拆离断层控制的缓倾滑动破碎带,主要金矿类型为构造蚀变岩型。依据控矿构造带的规模和土壤地球化学的异常特征,认为在该区的东黄沟、阳坡根及小黄沟一带找矿潜力较好,前景非常乐观。此外,该区出露的燕山期花岗细晶岩体与成矿关系密切,是矿区乃至整个熊耳山地区下步找矿的一个重要方向。

Analysis of the Geologic Feature and the Ore-Prospecting Potential of Huanggou Gold deposit in Luanchuan county

Xiong’er area is located in the Southern Margin of North China Platform.This area is intensive in tectonic activity and frequent in magma activities.So it is one of the major gold production bases in China,flowing with resources of metal mineral.The Huanggou gold deposit is located to the west of Xiong’shan mountain,with the similar background conditions to the known deposits. Through the research on the regional geological background,the geological characteristics in Huanggou Gold deposit,and the ore-prospecting achievements in the preliminary work,we can confirm that the main ore-controlling structures are controlled the sliding broken zone formed by the detachment fault zone and the leaning sliding fracture zone,And the main type of gold in this area is the tectonic altered rock.According to the scale of ore-controlling structural belt and abnormal characteristic of soil geochemistry,the potential of ore-prospecting is good in Donghuanggou,Yangpogen and Xiaohuanggou.Besides,the exposed granite aplite in the period of Yanshan is closely related to the ore-forming.It is an important direction of prospecting for the mining area and even the whole Xiong’er area in future.