摘要
甘肃省阳山金矿床是一个赋存于泥盆系浅变质岩中的似微细浸染型超大型金矿床。研究表明矿石中石英及方解石包裹体分为两种成因共9种物理状态类型,均一温度为105～310℃。成矿流体盐度w(NaCl)=1.6%～10.6%,密度为0.35～1.02g/cm3,成矿压力为400×105～800×105Pa。成矿流体呈中性偏弱碱性、弱还原性,以大气降水为主,岩浆水也不同程度地参与了成矿作用。
Yangshan gold deposit situated in Gansu province is a super-large micro-disseminated gold deposits hosted in Devonian metamorphic detrital rock. Study on fluid inclusions of quartz and calcite show that there are nine physical types of fluid inclusions. Their homogenization temperature range is 105～310℃, the salinity 1.6%～10.6%, the density 0.35～1.02 g/cm^(3), and the metallogenic pressure is about 400×10^(5)～800×10^(5) Pa. The metallogenic fluid is neutral to weakly alkalic and reduced, mainly derived from ancient meteoric water, in some extent magma water also participated in mineralization.
出处
《地质找矿论丛》
CAS
CSCD
2004年第2期105-109,共5页
Contributions to Geology and Mineral Resources Research
基金
武警黄金部队"阳山金矿床成因及深部预测研究"项目(编号:WJ00 03)资助。
关键词
流体包裹体
特征
阳山金矿床
甘肃省
fluid inclusions
characters
Yangshan gold deposits
Gansu province
