东昆仑希望沟金矿成矿地质背景、构造叠加晕特征及找矿前景分析

The ore-forming geological background,character of structural superimposed halo and ore-seeking prospect analysis of Xiwanggou area in East Kunlun

希望沟地区作为五龙沟外围重要的金矿找矿靶区,研究程度较低,为了解该区的成矿潜力,文中阐述了希望沟金矿成矿地质背景、地球化学特征;系统总结了区内XⅦ,XⅧ金矿化蚀变带的地质特征、矿(化)体特征;研究了XⅦ,XⅧ号带矿体构造叠加晕。结果表明:确定区内的金矿石类型为构造蚀变岩型和石英脉型;ⅩⅦ,ⅩⅧ金矿化蚀变带规模大,深部延伸稳定,带内矿体具南东侧伏规律;ⅩⅦ-2与ⅩⅧ-2矿体构造叠加晕均出现"前尾晕叠加"现象,反映深部仍存在较强的成矿作用。研究区找矿潜力较大,应加强地表及深部找矿工作。

As a very important prospecting target area,outside Xiwanggou area has been less studied.This paper expounds the regional metallogenic geological background and the geochemical character of the Xiwanggou gold deposit,and summarizes the geological character of deposit and XⅦ,XⅧ gold mineralization zone in Xiwanggou area. The deposit structural superimposed halo of XⅦ,XⅧ zone is studied. It is believed that in Xiwanggou area gold occurrences is the structure altered rock type and quartz vein type. The scale of the XⅦ,XⅧ gold mineralization zone is large with stable deep extension. Ore bodies in the X Ⅶ,X Ⅷ zone are lateral trending south east. The structural superimposed halo of ⅩⅦ-2 and ⅩⅧ-2 gold deposit show that indicator elements for forward primary halo and tail halo indicator elements is occurred together. It is proved that XⅦ,XⅧ zone have a larger deep ore-forming potential.