在变质岩的研究工作中,恢复各种变质岩的原岩性质是研究变质岩系的原岩建造和形成环境、进行地层划分和寻找有关矿床的基础。在国内外研究变质岩原岩性质的工作中,应用岩石化学的方法十分普遍,特别是对那些产状特征不明显和原岩组构已经消失的深变质岩石尤为重要。由于编制中国变 In the study of metamorphic rocks, the restoration of the original rock properties of various metamorphic rocks is the study of the original rock formation and formation environment of the metamorphic rocks, the stratigraphic division and the search for relevant deposits. In the research work of the metamorphic rock protolith at home and abroad, the application of petrochemical methods is very common, especially for those deep metamorphic rocks whose origin characteristics are not obvious and the original rock structure has disappeared. Due to the preparation of China change