残浆沸腾与锡钨成矿作用  

Ebullition of the Residual Magma and Sn-W Mineralization

作　　者：金明霞[1] 王洁民[1] 高锦曦[2] 

机构地区：[1]中国地质科学院成都地质矿产研究所 [2]国土资源部国际合作与科技司

出　　处：《地球学报（中国地质科学院院报）》1999年第3期265-271,共7页Acta Geoscientia Sinica

基　　金：国家自然科学基金

摘　　要：与锡钨成矿作用有关的“ Ｓ”型花岗岩，晚期残浆有强烈的沸腾作用，同时派生出高温、高压、高盐度和高密度锡钨成矿流体，并遵循应力差、温度差、盐度差和密度差的轨迹，在相对封闭的环境中作侧向或垂向运移，当运移到应力释放部位时，流体的物理化学条件发生跳跃式突变而成矿。A violent ebullition occurred in late residual magma of the S_type granite related to.Sn-W mineralization,and induced the generation of Sn and W ore_forming fluids of high temperature,high pressure,high salinity and high density.The fluids followed a path of stress difference,temperature difference,salinity difference and density difference for lateral migration or vertical migration in a relatively enclosed environment.The physicochemical condition experienced a jumping mutation, so that fluids precipitated and formed deposits when they were transported to the place where stress was released.

关 键 词：残浆沸腾 流体运移 锡矿床 矿床成矿 钨矿床 

分 类 号：P618.440.5[天文地球—矿床学] P618.670.5[天文地球—地质学]