新疆阿舍勒块状硫化物矿床预测准则与外围找矿预测  

Prediction Criteria and Prospecting Prediction of Ashele Volcanogenic Massive Sulfide Deposit in Xinjiang

作　　者：牛磊 徐兴旺[1,2,3] 洪涛 秦纪华 吴晓贵[6] 肖辉[7] 陈泽粟 刘涛 张美根 李杭[1,2,3] 王学海 Niu Lei;Xu Xingwang;Hong Tao;Qin Jihua;Wu Xiaogui;Xiao Hui;Chen Zesu;Liu Tao;Li Hang;Wang Xuehai(Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,China;Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing,100029,China;University of Chinese Academy of Sciences,Beijing,100049,China;Guangdong Provincial Key Lab of Geodynamics and Geohazards,School of Earth Sciences and Engineering,Sun Yat-sen University,Guangzhou,Guangdong,510275,China;Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai),Zhuhai,Guangdong,519082,China;Xinjiang Bureau of Geology and Mineral Exploration and Development,Urumqi,Xinjiang,830000,China;Xinjiang Ashele Copper Company Limited,Habahe,Xinjiang,836700,China)

机构地区：[1]中国科学院地质与地球物理研究所,中国科学院矿产资源研究重点实验室,北京100029 [2]中国科学院地球科学研究院,北京100029 [3]中国科学院大学,北京100049 [4]中山大学地球科学与工程学院,广东省地球动力作用与地质灾害重点实验室,广东广州510275 [5]南方海洋科学与工程广东省实验室(珠海),广东珠海519000 [6]新疆维吾尔自治区地质矿产勘查开发局第四地质大队,新疆阿勒泰836500 [7]新疆哈巴河阿舍勒铜业股份有限公司,新疆阿勒泰836700

出　　处：《新疆地质》2022年第1期6-11,共6页Xinjiang Geology

基　　金：国家重点研发计划天山-阿尔泰增生造山带大宗矿产资源基地深部探测技术示范项目(2018YFC0604002-2);北方增生造山成矿系统的深部结构与成矿过程项目(2017YFC0601201)联合资助。

摘　　要：阿舍勒块状硫化物矿床是中国阿尔泰成矿带重要的VMS矿床之一,位于阿尔泰西南缘的阿舍勒火山沉积盆地中。矿床受倒转紧闭向斜控制,边部发育喷流沉积岩。矿床上部层状块状铜锌矿体产出于玄武岩与英安质(火山)碎屑岩之间,与下部网脉状通道相矿化(体)构成典型的双层结构。在总结前人工作的基础上,依据构建的构造控矿模型与矿床结构模型,结合地层、构造、含矿岩石、矿化、蚀变、重力、电法等找矿标志,归纳了在矿区寻找①位于阿舍勒组第四岩性段顶部的向斜构造区;②出露大量喷流岩的地区;③寻找具强铜锌元素异常和低阻、高重力组合异常特征的地区等找矿预测准则。预测了主矿体的北侧向斜核部、西侧齐也组下部、北侧齐也组下部和南部向斜核部4个找矿靶区,以期为矿床下一步找矿勘查提供依据。The Ashele volcanogenic massive sulfide(VMS)deposit,located in the Ashele volcano-sedimentary basin of the southwest margin of Altay,is one of the important VMS deposits in the Chinese Altay metallogenic belt.The Ashele deposit occurs within a tightly closed overturned syncline,and most exhalites occur at the edge of the deposit.The orebodies of the Ashele deposit are characterized by a double layered structure with a feeder zone of veinlet-dissemi-nated and stockwork orebodies overlain by massive/stratiform orebodies.The stratabound Cu-Zn orebody shows a con-formable contact with the overlying basalt,and with the underlying dacitic volcanic or volcano-pyroclastic rocks.Ac-cording to the tectonic framework of ore district and structure model of deposit,this paper defines the prospecting crite-ria and prediction criterion,predicts the prospecting target area,and tries to provide useful insights for further explora-tion.On the basis of summarizing the previous work,according to the tectonic framework of ore district and structure model of deposit,combined with strata,structure,ore bearing rocks,mineralization,alteration,gravity anomaly and resis-tivity anomaly,this paper summarizes that①the synclinal structural areas located at the top of the fourth member of Ashele Formation,②the areas where a large number of exhalative rocks are exposed,and③the areas with strong copper and zinc anomalies,low resistivity and high gravity anomalies,predicts four prospecting targets of the main ore body,namely,the syncline core in the north of the main ore body,the lower part of Qiye Formation in the west of the main ore body,the lower part of Qiye Formation in the north of the main ore body and the syncline core in the south of the main ore body,and tries to provide useful insights for further exploration.

关 键 词：阿舍勒 块状硫化物矿床 地质特征 找矿标志 靶区预测 

分 类 号：P62[天文地球—地质矿产勘探]