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以往很少用变质岩的全岩化学成分分析数据对变质岩岩石矿物鉴定结果加以验证,本次研究对千枚岩不同岩类样品主量元素进行分析,讨论千枚岩主要化学成分对千枚岩分类命名的作用。实验利用X射线荧光光谱仪,通过建立元素测量条件、硅酸盐系列曲线方程参数,利用熔片法,对17件千枚岩样品进行全岩化学成分分析。统计结果显示:随着千枚岩中长英质含量增加,千枚岩的挥发系数和颜色指数有逐渐变小的趋势;随着千枚岩中长英质含量减少,千枚岩中(Na2O+K2O)%含量和(Na2O+K2O)2/(Si O2-43)值有明显变小的趋势。
In the past, the data of whole rock chemistry analysis of metamorphic rocks were rarely used to verify the identification results of metamorphic rocks and minerals. In this study, the major elements of different lithofacies samples were analyzed, and the main chemical components of phyllite were analyzed. Rock Classification Named role. Experiments were carried out by using X-ray fluorescence spectrometer to establish the whole rock chemical composition analysis of 17 phyllite samples by establishing the elemental measurement conditions and the silicate series curve equation parameters. The statistical results show that the volatility coefficient and color index of the phyllite tend to decrease with the increase of the Chang-Ying mass in the phyllite. With the decrease of the Chang-Ying mass in the phyllite, the Na2O + K2O)% content and the value of (Na2O + K2O) 2 / (Si O2-43) tend to decrease significantly.