论文部分内容阅读
本文根据滇西含锡花岗岩时、空间分布规律及含锡花岗岩的岩石学、岩石化学、地球化学和同位素特征,将岩体划分为母体含锡花岗岩及非母体含锡花岗岩。并以十个典型含锡岩体和六个非含锡岩体为模型,对其进行定量判别。分别以四个氧化物指标,五个微量元素指标及八个综合指标建立三个判别式,判别岩体的含锡性,对预测和找矿具有实际意义。
Based on the spatial and temporal distribution of tin-bearing granites and the petrology, petrochemistry, geochemistry and isotopic characteristics of the tin-bearing granites, the rock mass is divided into parent tin-bearing granites and non-parent tin-bearing granites. The ten typical tin-bearing rock masses and six non-tin-bearing rock masses were modeled and quantitatively identified. Three discriminant formulas are established respectively by four oxide indexes, five trace element indexes and eight comprehensive indexes to discriminate the tin content of the rock mass, which is of practical significance for prediction and prospecting.