山东胶西北地区两类花岗岩的矿物包裹体特征

CHARACTERISTICS OF TWO TYPES OF GRANITES IN THE NORTHWESTERN JIAODONG PENISULA

摘要:

与金矿关系密切的玲珑片麻状花岗岩及郭家岭斑状花岗岩和与金矿关系不大的玲珑中粗粒花岗岩具有不同的矿物包裹体类型、包裹体成分、盐度及包裹体均一法、爆裂法温度和压力。这些差异是由它们不同的成岩方式造成的,也就是说,玲珑片麻状花岗岩和郭家岭斑状花岗岩来自交待作用,而玲珑中粗粒花岗岩则来自重熔作用。

Abstract:

The Linglong gneissic granite and Guojialing porphyritic granite, which are closely related to the gold deposits, are different from the Linglong medium coarsed-grained granite, which is approximately irrelevant to the gold deposits, in the types, compositions and salinity of the inclusions in minerals as well as in the homogenization and decrepitation temperatures and pressures estimated. These differences are resulted from the dissimilar petrogenetic ways, that is, the Linglong gneissic granite and the Gu...