开放构造系中锶矿床成矿流体低温地球化学特征—─以四川大竹拱桥坝锶矿床为例  

LOW TEMPERATURE GEOCHEMICAL CHARACTERISTICS OF ORE FORMING FLUID OF STRONTIUM DEPOSIT IN OPEN STRUCTURAL SYSTEM —AN EXAMPLE FROM GONGQIAOBA STRONTIUM DEPOSIT,DAZHU,SICHUAN

作　　者：朱创业[1] 丁益民[1] 李保华[1] 沈军辉[1] 

机构地区：[1]成都理工学院

出　　处：《矿物岩石》1998年第S1期46-49,共4页Mineralogy and Petrology

基　　金：地矿部青年地质学家基金

摘　　要：本文探讨了开放构造系中锶矿床成矿流体的低温地球化学特征。通过对流体包裹体的成分、盐度、温度、压力、氢氧同位素及流体性质等地球化学特征进行研究，提出开放构造系中低温矿床形成于浅成环境，成矿流体为下渗大气降水和盆地建造水的混合流体。这两种流体的混合不仅导致了低温条件下成矿流体中矿质的沉淀，同时也造成了成矿流体物化性质在垂向上的变化。The present paper studies the low temperature geochemical characteristics of the ore forming fluid of Sr deposit in open structural system by taking the Gongqiaoba Sr deposit as an example. Based on geochemical studies of fluid inclusion on composition, salinity, temperature, pressure, hydrogen oxygen isotopes, and nature of the fluids, we consider that the low temperature ore deposit in open structural system is formed in shallow seated environment. Ore fluid is the mixture of shallow meteoric water and deep formation water. The mixing of two fluids not only results in precipitation of ore forming material, but also leds to the vertical changes of physical chemical nature of ore fluid.

关 键 词：天青石 流体包裹体 低温地球化学 开放构造系 拱桥坝锶矿床 四川 

分 类 号：P594.1[天文地球—地球化学] P618.780.1[天文地球—地质学]