蒙古国欧玉陶勒盖铜矿与我国多宝山铜矿对比研究

发布时间：2018-01-07 22:29

本文关键词：蒙古国欧玉陶勒盖铜矿与我国多宝山铜矿对比研究　出处：《中国地质大学(北京)》2017年硕士论文　论文类型：学位论文

【摘要】：欧玉陶勒盖铜矿与多宝山铜矿是位于中亚成矿域中的岛弧型斑岩铜矿,其中欧玉陶勒盖矿床是世界上已知最大斑岩型铜金矿床之一,也是我国“一带一路”项目中“中蒙俄经济走廊”中国企业走出去的重要目标;多宝山铜矿是我国重要的斑岩型矿床,并且所在的矿集区矿产资源丰富。前人在两个矿床均已有一定研究基础,但缺乏两者间的对比工作。本文通过对大量已搜集资料的整理、分析以及各项相关的野外工作和实验测试,对两者进行对比研究,初步总结中亚成矿域岛弧型斑岩铜矿的特征,进一步探讨欧玉陶勒盖-查干苏布尔加成矿带的延伸情况,在两个矿床建立成因模型和找矿模型,并为两个矿床提出进一步的找矿建议,在欧玉陶勒盖划分成矿远景区。研究表明,中亚成矿域岛弧型斑岩铜矿含矿岩体主要呈中酸性,具有高钾钙碱性特点,稀土元素整体表现为轻稀土富集,重稀土略有亏损,微量上相对富集Rb、Ba、Hf等元素,相对亏损Ta、Nb和Ti,成矿物质表现为幔源特征。区域上岛弧型斑岩铜矿发育典型斑岩铜矿蚀变,矿化与石英绢云母化关系最为密切。在成矿系统上,岛弧型斑岩铜矿可以独自构成成矿系统,也可能与浅成低温热液矿床构成区域上的成矿系统,此外,中亚成矿域岛弧型斑岩铜矿在古生代大量发育,各矿床的成矿时代具有一定时间跨度。多宝山矿床位于钦察岩浆弧,早奥陶世由于古亚洲洋的俯冲,形成多宝山岛弧型斑岩铜矿,其成矿时代属早古生代;欧玉陶勒盖-查干苏布尔加成矿带位于中晚古生代哈萨克-蒙古岩浆弧上,泥盆世由于洋壳俯冲,形成欧玉陶勒盖岛弧型斑岩铜矿,其成矿时代属于晚古生代。二者形成于不同构造事件,并非形成于同一成矿带,欧玉陶勒盖所在成矿带向西延伸。此外,在收集资料和对比研究工作基础上,在欧玉陶勒盖划分北Heruga区域、Javkhlant区域、西Hugo浅部区域、西Hugo深部区域、Ulaan Khud北部矿点等五个找矿远景区,建议加强矿区内寻找浅成低温热液矿床的工作,建议在多宝山矿区加强深部找矿工作。
[Abstract]:Ou Yutao and the choice of Baoshan copper mine is located in the copper metallogenic domain in island arc porphyry copper mine, which Ou Yutao Tolgoi deposit is one of the largest known porphyry copper gold deposits in the world, but also an important goal of China's "The Belt and Road" project "Mongolia and Russia economic corridor" Chinese enterprises go out of the Baoshan copper mine is important; the porphyry deposits in China, and the mining area is rich in mineral resources. In the previous two deposits have certain research foundation, but the lack of correlation between the two. Based on the large number of collected data collation, analysis and other related field work and experimental test, the comparative study of the two. Preliminary summary of characteristics of arc type porphyry copper metallogenic domain, to further explore the Chagansu bluejaz oyu Tolgoi - extension of metallogenic belt, and to build genetic model in the two deposits Mine model, and puts forward suggestions for further prospecting in two deposits, divided into oyu Tolgoi prospecting area. Research shows that the domain of arc type porphyry copper metallogenic ore rock is acidic, with high potassium calc alkaline characteristics of rare earth elements for the overall performance of LREE enrichment, hree loss slightly. The trace on the relative enrichment of Rb, Ba, Hf and other elements, the relative loss of Ta, Nb and Ti, the ore-forming material showed features of the mantle source region. The island arc porphyry copper mine development typical porphyry copper mineralization and alteration, quartz sericite is most closely related. In the metallogenic system, arc porphyry copper mine alone a metallogenic system, may also be a epithermal deposit formed on regional metallogenic system, in addition, arc type porphyry copper metallogenic domain developed in Paleozoic metallogenic epoch of the deposits with a certain time span of the Duobaoshan ore beds. In the kypchak magmatic arc, early Ordovician due to subduction of the paleo Asian Ocean, the formation of Duobaoshan island type porphyry copper deposit, its metallogenic epoch is early Paleozoic; - Chagansu bluejaz Ouyu Tolgoi porphyry metallogenic belt is located in the upper Paleozoic Kazakhstan - Mongolia magmatic arc, Devonian subduction of oceanic crust due to formation, Ouyu Tolgoi porphyry island arc the porphyry copper deposit, metallogenic epoch belongs to late Paleozoic. The two formed in different tectonic events are not formed in the same metallogenic belt, where the Ouyu Tolgoi porphyry metallogenic belt extends westward. In addition, in the data collection and comparative study based on Javkhlant in Heruga area of North oyu Tolgoi division, west area, shallow Hugo the western region, Hugo deep area, north of Khud Ulaan five ore prospecting areas, proposed to strengthen the mining area for epithermal deposit work, proposed to strengthen the deep ore prospecting work in Baoshan.

【学位授予单位】：中国地质大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P618.41

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