内蒙古道伦达坝铜多金属矿床成矿流体特征及其演化

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	内蒙古道伦达坝铜多金属矿床成矿流体特征及其演化; Characteristics and evolution of ore-forming fluids of the Daolundaba copper-poly-metal deposit, Inner Mongolia.
	徐佳佳 ; 赖勇 ; 崔栋 ; 常勇 ; 蒋林 ; 舒启海 ; 李文博
刊名	岩石学报
	2009
关键词	流体包裹体氢氧同位素成矿流体道伦达坝铜多金属矿内蒙古 Fluid inclusions Hydrogen and oxygen isotopes Ore-forming fluids Daolundaba copper-poly-metal deposit Inner Mongolia
英文摘要	内蒙古自治区锡林郭勒盟西乌旗道伦达坝中型铜多金属矿床位于大兴安岭南段西坡,矿体主要产于粉砂质板岩与黑云母花岗岩的接触带。本文通过系统的岩相学、矿相学、流体包裹体和氢、氧同位素研究表明,道伦达坝铜多金属矿床属岩浆期后气化热液矿床,成矿过程包括早、中、晚3个阶段,温度区间分别为388～>500℃、302～463℃、179～359℃。钨-锡矿化主要发生在中阶段、铜矿化主要发生在晚阶段。初始成矿流体为CH_4-CO_2-H_2O-NaCl体系,随着温压降低,CO_2、CH_4大量逸失,而演化为H_2O-NaCl体系。流体盐度变化范围大,但从早到晚逐步降低。流体临界分离导致钨、锡矿化;流体CH_4、CO...; The Daolundaba medium-sized Copper-poly-metal deposit ill Xiwuzhumuqin Qi, Xilinguole City, Inner Mongolia, occurs in the western Great Xingan Range. Ore-bodies are mainly hosted in the contact zone between a biotite granite and a silty, slate. The study in ore petrography and fluid inclusions and hydrogen oxygen isotope geochemistry shows that the Daolundaba deposit was formed by post-magmatic hydrothermal process. Hydrothermal mineralization tire divided into the early, middle and late stages with homogenization temperatures of 388 similar to >500 degrees C, 302 similar to 463 degrees C and 179 similar to 359 degrees C, respectively. W and Sri mineralization occurred in the middle stage, while the Cu mineralization mainly occurred in the late stage. The ore-forming fluid was originally a CH(4)-CO(2)-H(2)O-NaCl system, and evolved into a H(2)O-NaCl system through release of CH(4) and CO(2) along With decreasing temperature and pressure. The fluid salinity was widely variable, but decreased from early to late. The vapor-brine phase separation resulted in mineralization of W and Sn; and the CH(4) and CO(2) escape and the input and mixing of meteoric water caused Cu deposition. During the hydrothermal mineralization, the biotite granite wall-rock and silty, slate served as seal and container to trap ore-fluids, respectively. This makes the granite-slate contact zones to be key positions for metallic mineralization and future ore exploration.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000273455000025&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; SCI(E); 中文核心期刊要目总览(PKU); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 5; 11; 2957-2972; 25
语种	中文
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/179780]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	徐佳佳,赖勇,崔栋,等. 内蒙古道伦达坝铜多金属矿床成矿流体特征及其演化, Characteristics and evolution of ore-forming fluids of the Daolundaba copper-poly-metal deposit, Inner Mongolia.[J]. 岩石学报,2009.
APA	徐佳佳.,赖勇.,崔栋.,常勇.,蒋林.,...&李文博.(2009).内蒙古道伦达坝铜多金属矿床成矿流体特征及其演化.岩石学报.
MLA	徐佳佳,et al."内蒙古道伦达坝铜多金属矿床成矿流体特征及其演化".岩石学报 (2009).