南秦岭银洞沟银金矿床矿相学与成矿时代

doi:10.16461/j.cnki.1000-4734.2017.04.003

CORC > 北京大学 > 地球与空间科学学院

	南秦岭银洞沟银金矿床矿相学与成矿时代; Mineragraphy and 40Ar/39Ar Geochronology of Yindonggou Ag-Au Deposit, South Qinling Mountains, China
	朱峰 ; 李文博 ; 胡传胜
刊名	矿物学报
	2017
关键词	银洞沟银金矿床地质特征年代学 Yindonggou Ag-Au deposit geological characteristics geochronology
DOI	10.16461/j.cnki.1000-4734.2017.04.003
英文摘要	湖北银洞沟银金矿床是南秦岭重要的大型银矿床,矿体产于武当群变质火山岩中,受剪切构造控制,矿石类型主要为石英脉型.矿相学研究表明,含银矿物与方铅矿常同脉产出,从早到晚产出的含银矿物分别为银金矿、自然银、辉银矿、辉铜银矿,有从银矿化向铜矿化转变的趋势,反映了成矿流体从早到晚由氧化变为还原.测得与银金矿密切共生的白云母氩-氩坪年龄为231.0±2.0 Ma(MSWD=0.96),反等时线年龄为229.5±1.4 Ma(MSWD=0.73),与前人测得的本区剪切带多硅白云母氩-氩年龄一致,表明成矿作用与区域剪切构造变形有关.; Yindonggou Ag-Au deposit is an important large-size silver deposit in South Qinling mountains,central China.Quartz vein type ore bodies are hosted by the metamorphosed volcanic rocks of Wudang Group and controlled by shear zones.According to field observation and laboratory studies,silver-bearing assemblages are electrum,native silver,argentite and jalpaite in sequence,with a trend from silver mineralization to a copper one,indicating a transition from oxidization to reduction of ore-forming fluid environment.The 40Ar/39Ar plateau age of muscovite intergrowth with Ag-Au minerals is 231.0 ± 2.0 Ma (MSWD =0.96),and inverse isochron age is 229.5 ± 1.4 Ma (MSWD =0.73).These ages are consistent with the 40Ar/39Ar ages of phengite in the shear zones of the mining area,implying that the metallogenesisis related to the regional shear deformation.; 国家自然科学基金项目; 全国危机矿山接替资源找矿项目; 4; 386-394; 37
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/464729]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	朱峰,李文博,胡传胜. 南秦岭银洞沟银金矿床矿相学与成矿时代, Mineragraphy and 40Ar/39Ar Geochronology of Yindonggou Ag-Au Deposit, South Qinling Mountains, China[J]. 矿物学报,2017.
APA	朱峰,李文博,&胡传胜.(2017).南秦岭银洞沟银金矿床矿相学与成矿时代.矿物学报.
MLA	朱峰,et al."南秦岭银洞沟银金矿床矿相学与成矿时代".矿物学报 (2017).