本文選題：地球化學(xué)　切入點(diǎn)：黃玉單晶　出處：《礦床地質(zhì)》2017年04期 　論文類型：期刊論文

【摘要】：文章以贛南茅坪大型鎢礦床成礦早階段形成的黃玉單晶為研究對象,對其中的流體包裹體開展了巖相學(xué)、顯微測溫以及激光拉曼光譜研究。結(jié)果顯示,茅坪鎢礦床黃玉單晶中的流體包裹體以富液兩相包裹體為主,同時(shí)發(fā)育有單相包裹體、富二氧化碳的三相包裹體以及含子礦物包裹體。其中,含子礦物包裹體發(fā)育是本礦床黃玉中包裹體的重要特征,子礦物成分有方解石、石英、石鹽等;流體包裹體的均一溫度介于200~509℃之間,峰值位于420~500℃之間,鹽度w(NaCl_(eq))為4.32%~19.22%,峰值介于17%~19%,較前人獲得的石英脈型鎢礦床成礦溫度和鹽度均高出許多,其峰值(420~500℃)在一定程度上銜接了石英脈型黑鎢礦高溫階段的演化歷史;黃玉單晶中包裹體還具有富含CO_2、CH_4、N_2等揮發(fā)分的特征。綜上所述,筆者認(rèn)為石英脈型鎢礦的成礦流體在早階段具有高溫、中高鹽度、富揮發(fā)分、富含多種離子的特征。
[Abstract]:Taking the Topaz single crystal formed in the early stage of mineralization of Maoping large tungsten deposit in southern Jiangxi as the object of study, the petrography, microthermometry and laser Raman spectroscopy of fluid inclusions were carried out. The fluid inclusions in Topaz single crystals of Maoping tungsten deposit are mainly liquid-rich two-phase inclusions with single-phase inclusions, carbon-rich three-phase inclusions and submineral inclusions. The development of submineral inclusions is an important feature of inclusions in topaz of the deposit. The submineral compositions include calcite, quartz, rock salt, etc. The homogenization temperature of fluid inclusions is between 200 鈩，

本文編號：1589898