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新疆哈图金矿成矿流体组分与同位素地球化学特征分析
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  • 英文篇名:Analysis of Ore-Forming Fluid Composition and Isotope Geochemical Characteristics of Hatu Gold Mine in Xinjiang
  • 作者:王人可 ; 地里夏提·买买提 ; 吴兆宁 ; 卡衣沙尔·饿热斯 ; 白玉秀 ; 王俊林 ; 王勇 ; 刘波 ; 林彩香
  • 英文作者:WANG Renke;DILIXIATI·MAIMAITI;WU Zhaoning;KAYISHAER·ERESI;BAI Yuxiu;WANG Junlin;WANG Yong;LIU Bo;LIN Caixiang;College of Geology and Mining Engineering,Xinjiang University;West Gold Karamay Hatu Gold Mine Co.Ltd.;
  • 关键词:哈图金矿 ; 成矿流体成分 ; 硫同位素 ; 碳、氧同位素
  • 英文关键词:Hatu gold mine;;ore-forming fluid composition;;sulfur isotope;;carbon and oxygen isotope
  • 中文刊名:有色金属工程
  • 英文刊名:Nonferrous Metals Engineering
  • 机构:新疆大学地质与矿业工程学院;西部黄金克拉玛依哈图金矿有限责任公司;
  • 出版日期:2019-10-25
  • 出版单位:有色金属工程
  • 年:2019
  • 期:10
  • 基金:国家自然科学基金资助项目(U1503191)~~
  • 语种:中文;
  • 页:82-89
  • 页数:8
  • CN:10-1004/TF
  • ISSN:2095-1744
  • 分类号:P618.51;P597
摘要
哈图金矿床位于新疆西准噶尔地区南部,是哈图金矿带中重要的金矿床之一。通过对金矿石英脉样品中的石英开展流体包裹体成分分析,结合矿石样品中的毒砂和黄铁矿的硫同位素以及方解石中的碳、氧同位素特征,分析可知:包裹体气相成分以H_2O为主,CO_2和N_2含量次之。液相成分中阳离子以Na~+、Ca~(2+)为主,阴离子以Cl~-和SO_4~(2-)为主,成矿流体属SO_4~(2-)-Cl~--Na~+-Ca~(2+)型。从早阶段至晚阶段,H_2O含量增加,CO_2及Na~+、Cl~-等离子含量降低。硫化物中硫同位素组成为-2.9‰~+0.8‰,集中在0±3‰范围,成矿物质的硫来自岩浆流体或赋矿围岩。方解石中的碳、氧同位素组成中δ13 CPDB值为-11.4‰~-9.2‰,δ18 OSMOW值为+8.5‰~+17.4‰,认为成矿流体属大气降水和岩浆水混合流体。哈图金矿与穆龙套型金矿有相似的含矿地层和成矿时间,因此可以考虑哈图地区寻找穆龙套型金矿的可能性。
        The Hatu gold mine,located in the south of the western Junggar region of Xinjiang,is one of the important gold mines in the Hatu gold belt.In this paper,fluid inclusion composition analysis of quartz in quartz vein samples of gold mine is carried out,and the characteristics of sulfur isotopes of the arsenopyrite and pyrite as well as carbon and oxygen isotopes in calcite were analyzed.The analysis shows that the gas phase composition of inclusion is mainly H_2 O,followed by CO_2 and N_2.The cations in the liquid phase are mainly Na~+and Ca~(2+),while the anions are mainly Cl~-and SO_4~(2-),and the ore-forming fluid is SO_4~(2-)-Cl~--Na~+-Ca~(2+).From the early stage to the late stage,the H_2 O content increased while the CO_2,Na+,and Cl-plasma content decreased.The sulfur isotope composition of the sulfide is-2.9‰ – +0.8‰,concentrated in the range of 0‰±3‰,and the sulfur of ore-forming material is derived from magmatic fluid or ore-bearing surrounding rock.The carbon and oxygen isotopic composition of the calcite isδ13 CPDB=-11.4‰ –-9.2‰,andδ18 OSMOW= +8.5‰ – +17.4 ‰.The ore-forming fluid is considered to be a mixture of meteoric precipitation and magmatic water.The Hatu gold mine has similar ore-bearing strata and metallogenic time to Muruntau gold deposit,so the possibility of finding Muruntau gold deposit in Hatu area can be considered.
引文
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