控矿构造特征及找矿前景分析
(1. 中南大学 有色金属成矿预测教育部重点实验室，长沙 410083；
2. 中南大学 地球科学与信息物理学院，长沙 410083)
摘 要: 哈图金矿和萨尔托海金矿区位于新疆准噶尔盆地西部。区内沉积岩主要为晚古生代海相火山−沉积岩系，岩浆岩以海西晚期碱性石英二长岩、石英正长岩和正长花岗岩为主，区内构造总体为北东南西向的达尔布特复背斜和扎拉特复向斜，海西−印支末期断裂构造展布明显。研究区金矿化有剪切带石英脉型、破碎蚀变岩型、剪切带超基性岩型、细脉浸染型四种类型。综合分析，认为本区金矿化带的形成与石炭纪多期次海相火山喷发活动有密切的物质来源关系，中基岩火山岩为本区金源提供了丰富的物质基础，区内造山期后的碱性花岗岩类的巨大气水溶液和热力作用对以石炭系火山沉积岩含金源层的长期活化转移作用并通过哈图断裂带、安齐断裂带和达尔布特断裂带及其次级构造的有利部位，通过水岩反应卸载沉淀而形成4种主要金矿化类型，组成了本区特有多种类型组合成矿系列。根据总体成矿规律，圈定了3个找矿前景地段。
关键字: 控矿构造；哈图−萨尔托海；金矿带；西准噶尔；找矿前景
prospective analysis of Hatu—Saertuohai gold belt in
Western Junggar, Xinjiang
（1. Key Laboratory of Metallogenic Prediction of Nonferrous Metals, Ministry of Education,
Central South University, Changsha 410083, China;
2. School of Geosciences and Info-Physics, Central South University, Changsha 410083, China）
Abstract:Hatu and Saertuohai gold deposits are located in Western Junggar of Xinjiang. The typical sedimentary rocks in this district are Neopaleozoic volcanic sedimentary rock series and the intrusions are mainly Late Hercynian alkaline quartz monzonite, quartz syenite and syenite granite, moreover, the NE-SW structures named Daerbute compound anticline as well as Zalate compound syncline constitute the major structure of this region and the fault structures dated to Late Hercy-Indosinian are also pervasive. There are four gold mineralization types in these research deposits, like shear zone quartz vein type, clastic altered rock type, shear zone ultrabasic rock type and fine disseminated type. Comprehensively, it is believed that the forming of gold mineralization belt has a strong relationship with Carboniferous multiple volcanic eruption in terms of ore-forming materials, additionally, intermediate-basic volcanic rocks in this district provide abundant materials for gold source. The giant gas-aqueous hydrothermal and the thermal effect coming from post orogenic alkaline granite series play a significant role in secular mobilization of gold-containing ore source bed in Carboniferous volcanic sedimentary rock, then through water-rock interaction as well as the effect of Hatu fault belt, Anqi fault belt, Daerbute fault belt and secondary structures, the ore-forming materials tend to be precipitated to form the four gold mineralization types. According to the general metallogenic regularity, three prospecting targets are delineated.
Key words: ore-controlling structure; Hatu—Saertuohai; gold belt; Western Junggar; prospectiveness
