本文選題：會澤鉛鋅礦田　切入點：硫同位素　出處：《礦物巖石地球化學通報》2016年06期 　論文類型：期刊論文

【摘要】：為探討會澤鉛鋅礦田成礦流體總硫同位素組成、成礦溫度、硫源及還原硫的形成機制,在分析前人的硫同位素數(shù)據(jù)基礎上對麒麟廠礦床上部原生礦體硫化物(黃鐵礦、閃鋅礦和方鉛礦)及麒麟廠和礦山廠礦床外圍新發(fā)現(xiàn)的硫酸鹽礦物(重晶石)進行了硫同位素研究。結果顯示,原生礦體中的硫化物的δ34S變化為8.0‰~17.68‰,成礦流體中硫同位素已達分餾平衡;礦床外圍的硫酸鹽δ34S變化為17.95‰~24.30‰。利用共生礦物對Pinckney法,估算獲得成礦流體的δ34SΣS為14.44‰,與海相硫酸鹽的δ34S相近;通過同位素地質溫度計,估算獲得成礦溫度為134~388℃;包裹體測溫發(fā)現(xiàn),重晶石為熱液成因,暗示成礦流體中的硫可能來自礦區(qū)及礦區(qū)外圍各個地層的海相硫酸鹽或是礦區(qū)發(fā)現(xiàn)的熱液重晶石。硫酸鹽的還原機制應為熱化學還原作用(TSR)。
[Abstract]:In order to study the total sulfur isotopic composition, ore-forming temperature, sulfur source and reducing sulfur formation mechanism of ore-forming fluid in Huize lead-zinc ore field, the sulfides (pyrite) of the upper primary orebody (pyrite) in the upper part of the Kirinchang deposit were analyzed on the basis of previous sulfur isotopic data. The sulfur isotopic study of the new sulfate minerals (barite) found in the periphery of the Kirinchang and Kuangchang deposits shows that the 未 34s of sulfides in the primary orebodies vary from 8.0 鈥，

本文編號：1599028