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引言在石英-白云母分解线上的低压、高温条件下,夕线石、堇青石、石榴石和斜方辉石是区域变质和接触变质环境混合岩中的常见矿物。特别是熔融与脱水反应 Qtz+Als+Bio=Kfs+Cdt+Gar+V 和 Qtz+Bio+Gar=Kfs+Cdt+Opx+V 之间的关系对于这种组合的解释是很重要的(缩写符号见表1)。Holdaway和 Lee(1977)研究了 K_2O-FeO-Al_2O_3-SiO_2-H_2O 体系(KFASII)的两个反应:Qtz+Als+Bio=Kfs+Cdt+V 和 Cdt=Qtz+Als+Gar+V,并确定了这两个反应的交点为740℃ 和
Introduction Sillimanite, cordierite, garnet and orthopyroxene are common minerals in the mixed metamorphic and metamorphic environment of metamorphic rocks under the conditions of low pressure and high temperature on the quartz-muscovite decomposition line. In particular, the relationship between the melting and dehydration reactions Qtz + Als + Bio = Kfs + Cdt + Gar + V and Qtz + Bio + Gar = Kfs + Cdt + Opx + V is very important for the explanation of this combination (abbreviation See table 1). Holdaway and Lee (1977) studied two reactions in the K2O-FeO-Al_2O_3-SiO_2-H_2O system (KFASII): Qtz + Als + Bio = Kfs + Cdt + V and Cdt = Qtz + Als + Gar + The intersection of these two reactions is 740 ° C