鄯善县康古尔金矿带小尖山金矿地质特征及找矿标志

Geological characteristics and prospecting criteria of Xiaojianshan gold deposit in Kanggur gold belt,Shanshan County

小尖山金矿是近年来新疆鄯善县康古尔金矿带发现的一重要的金矿床,大地构造处与哈萨克斯坦星星峡谷带~旱山微板块中的雅满苏~红石山~黑鹰山晚古生代陆内裂谷带内。石炭系是区内的主要地层出露,下石炭统雅满苏组与该区金矿成矿存在密切联系,区内以北西西向构造为主,阿齐山一雅满苏岛弧带整体为一向南东倾伏的复式背斜褶皱带,沿阿奇山一雅满苏岛弧带岩浆侵人活动频繁,侵入岩呈近东西向分布,以华力西中晚期花岗岩类及花岗闪长岩、闪长岩及花岗岩斑岩为主。综合研究认为该矿为韧性剪切带有关的中一低温热液型金矿床。下文在对鄯善县康古尔金矿带小尖山金矿地质特征进行分析的基础上,探讨其找矿标志,希望能为该区找矿工作提供一定的参考作用。

Xiaojianshan gold deposit is an important gold deposit discovered in KANGGUL gold belt,Shanshan County,Xinjiang in recent years.The geotectonics is located in the Yamansu Hongshishan Heiyingshan intracontinental rift zone of Late Paleozoic in Xingxing gorge belt Hanshan microplate of Kazakhstan.The lower Carboniferous Yamansu formation is closely related to the gold mineralization in the area.The structure of the area is mainly nw-w.the Aqishan Yamansu island arc belt is a complex anticline fold belt,which leans to the southeast as a whole.Along the Aqishan Yamansu island arc belt,magma intrusion is frequent,and the intrusive rocks are distributed in the near east-west direction,with the middle and late Variscan granite The main rocks are granodiorite,diorite and granite porphyry.It is considered that the deposit is a meso low temperature hydrothermal gold deposit related to ductile shear zone.Based on the analysis of the geological characteristics of Xiaojianshan gold deposit in KANGGUL gold belt,Shanshan County,this paper discusses its prospecting criteria,hoping to provide some reference for the prospecting work in this area.