广东梅子冲铅锌钨多金属矿床流体包裹体特征及成矿作用

发布时间：2018-04-16 04:18

  本文选题：流体包裹体 + 成矿作用　； 参考：《地质与勘探》2017年02期

【摘要】：梅子冲铅锌钨多金属矿床位于广东省韶关市一六矿区。野外调查和室内显微镜鉴定表明,梅子冲矿床成矿作用分为两期五阶段,第一期为矽卡岩期,可以分为早期矽卡岩阶段(A1)、晚期矽卡岩阶段(A2)和钾长石白钨矿阶段(A3);第二期为热液期,可以分为石英硫化物阶段(B1)和石英碳酸盐阶段(B2)。矿体的石英和白钨矿中含有富液相的气液两相流体包裹体,地质特征结合包裹体测温资料表明,成矿温度介于207℃~449℃,盐度为1.16%~12.4%,反映矿床形成于中-高温环境。成矿流体特征及成矿温度的演化表明,A1+A2至A3阶段的流体混合作用可能导致了白钨矿的形成,A3至B1阶段的流体混合作用可能促进了铅锌矿的形成。
[Abstract]:Meizichong lead-zinc-tungsten polymetallic deposit is located in No. 16 Mining area of Shaoguan City, Guangdong Province.Field investigation and laboratory microscopic identification show that the mineralization of the Meizi Chong deposit is divided into two phases and five stages, the first stage is skarn stage,It can be divided into early skarn stage (A1), late skarn stage (A2) and potassium feldspar scheelite stage (A3); the second stage is hydrothermal stage, which can be divided into quartz sulphide stage (B1) and quartz carbonate stage (B2).Quartz and scheelite ore bodies contain liquid-rich gas-liquid two-phase fluid inclusions. The geological characteristics and the temperature data of inclusions show that the ore-forming temperature is between 207 鈩，

本文编号：1757264