矿床地质2024，Vol.43Issue(4)：865-876,12.DOI:10.16111/j.0258-7106.2024.04.008
东昆仑屈库勒克东金锑矿床地质特征、控矿构造及成因
Geological characteristics,ore-controlling structures and ore genesis of Qukulekedong Au-Sb deposit,East Kunlun Orogen
摘要
Abstract
The Qukulekedong deposit in Xinjiang,NW China is a large Au-Sb deposit that was newly discovered in the westernmost part of the East Kunlun Orogen. Large-scale Au-Sb mineralization and associated hydrothermal al-teration are confined within the F5 fault and associated fracture zone. The Au-Sb lodes are predominantly hosted within the slightly-metamorphic carbonaceous siltstone of the Upper Carboniferous Halamilanhe Group with mi-nor hosted in the dioritic dykes. Ore minerals mainly include pyrite and stibnite,as well as minor arsenopyrite,chalcopyrite,pyrrhotite,and native gold. They commonly occur as disseminated,veined,veinlet,and massive ores. The mineralization has a close relationship with silicification and sericitization. Geometric and kinematic analysis indicate that the F5 fault strikes east-west and dips to the north (340°～20°) at 55°～85°,showing a top-to-the-south thrusting formed in a syn-to post-collisional orogenic setting during the Triassic. Field geological evi-dence,in combination with previous studies,suggest that the F5 fault predominantly controls the geometry,spatial distribution and occurrence of Au-Sb mineralized corridor and high-grade lodes,and the timing of faulting coin-cides with that of Au-Sb mineralization. Therefore,the F5 fault becomes a pivotal controlling factor for Au-Sb mineralization. The dioritic dykes plays a role of catalyst in the Au-Sb enrichment and mineralization,rather than a direct causative factor. Based on geological characteristics,ore-controlling structures and its control on ore ge-nesis,and previous studies,we propose that the Qukulekedong Au-Sb deposit is likely a fault-controlled orogenic deposit.关键词
地质特征/控矿构造/矿床成因/屈库勒克东金锑矿床/东昆仑Key words
geological characteristics/ore-controlling structures/ore genesis/Qukulekedong Au-Sb deposit/East Kunlun Orogen分类
天文与地球科学引用本文复制引用
马小平,陈子霖,李正辉,余亮,时浩,赵伟策,赵晓波,马福,韩宝成,朱伟,薛春纪,满荣浩,刘洋涛..东昆仑屈库勒克东金锑矿床地质特征、控矿构造及成因[J].矿床地质,2024,43(4):865-876,12.基金项目
本文得到且末县邦泰矿业投资有限公司科研项目(编号:33012023014)、新疆维吾尔自治区人民政府国家305项目办公室、新疆维吾尔自治区"天池英才"引进计划、新疆维吾尔自治区重大科技专项(编号:2021A03001-5)、和第三次新疆科学考察(编号:2022xjkk1301)联合资助 （编号:33012023014）
