Die Reaktion 2 Zoisit+1 CO2 ⇌ 3 Anorthit+1 Calcit+1 H2O

摘要: The equilibrium conditions of the following reaction 2 zoisite +1 CO2⇌3 anorthite+1 calcite+1 H2O Ca2Al3[O/OH/SiO4/Si2O7]+1 CaAl2Si2O8+1 CaCO3+1 have been determined experimentally at total pressures P j= 2000 bars, P f =5000 and =7000 bars. Owing to vertical position curves in isobaric T- $$X_{{\text{CO}}_{\text{2}} }$$ diagrams, composition binary H2O-CO2 fluid phase coexisting with is independent temperature interval investigated. According our experiments, orthorhombic only stable a concentration CO2 which less than, respectively, ca. Mol% =2000 ea. 6 10 Thus, rich H2O. While this experimental data demonstrate that influence pressure cannot be neglected: With increasing can rise little. studied, exhibits small values ,leads two important petrogenetic conclusions: