摘要
赣南崇义县淘锡坑钨矿位于南岭东西向构造带东段与武夷山NE-NNE向构造带南段的复合部位,属于以石英脉型黑钨矿为主的钨多金属矿床。文章通过氢、氧、硫同位素地球化学特征的研究,探讨了淘锡坑钨矿成矿流体的来源及演化。研究结果显示:δD值介于-77‰～-45‰之间;石英矿物的δ18O值介于+7.3‰～+12.2‰之间,计算给出石英中水的δ18OH2O值介于-3.1‰～1.2‰之间。黄铁矿的δ34S值分布于0.1‰～-2.1‰之间,黄铜矿的δ34S值分布于-1.3‰～-2.3‰,毒砂的δ34S值分布于-1.4‰～-1.8‰之间。研究结果表明:淘锡坑钨矿床主成矿期成矿流体显示两种流体混和的特征,成矿流体中的硫主要为岩浆来源。
The Taoxikeng tungsten deposit in Chongyi County of southern Jiangxi Province is mainly a quartz vein-type polymetallic tungsten deposit.Based on hydrogen,oxygen and sulfur isotopic characteristics,this paper studied the origin and evolution of the ore-forming fluid.The results show that δD values of fluids from fluid inclusions in quartz vary from-77‰ to-45‰%,δ18O values of quartz from the ore change from ＋7.3‰ to ＋12.2‰,δ18OH2O values range from-3.1‰ to 1.2‰,δ34S values of pyrite from the ore range from 0.1‰ to-2.1‰,δ34S values of chalcopyrite from the ore range from-1.3‰ to-2.3‰,and δ34S values of arsenopyrite from the ore range from-1.4‰ to-1.8‰.Hydrogen and oxygen isotopic composition of the fluid inclusions in quartz of the major ore-forming stage indicates that the water was derived mainly from mixed me-teoric and magmatic water,whereas sulfur isotopes in ore-forming fluid were derived mainly from the magma.
出处
《矿床地质》
CAS
CSCD
北大核心
2011年第1期1-10,共10页
Mineral Deposits
基金
国家自然科学基金重点项目(40634020)
国家973项目(2007CB411408)的联合资助
关键词
地球化学
氢氧硫同位素组成
淘锡坑钨矿
赣南
geochemistry
hydrogen
oxygen and sulfur isotopic compositions
Taoxikeng tungsten deposit
southern Jiangxi Province
