Experimental Determination of Phase Equilibria of Micas in the System MgO - Al2O3 - TiO2 - SiO2 - K2O - H2O

本项目对MgO-Al2O3-TiO2-SiO2-K2O-H2O体系中硅云石固溶体的热力学性质进行了系统的相平衡研究。实验计划将基于确定在不同相组合中平衡的云母固溶体的组成，在恒定的温度和压力下，固定云母组分的化学势。平衡的方法将通过等温和等压的成分反转来建立，沿着一组交换向量来描述对地幔交代和钾基性岩浆生成等过程的组成的扎实理解。

9316304 Patino Douce This project involves a systematic phase equilibrium investigation of the thermodynamic properties of phlogopite solid solution in the system MgO-Al2O3-TiO2-SiO2-K2O-H2O. The experimental program will be based upon determining the composition of phlogopite solid solutions equilibrated in divariant phase assemblages which, at constant temperature and pressure, fix the chemical potentials of the components of the mica. Approach to equilibrium will be established by isothermal and isobaric compositional reversals along a set of exchange vectors chosen to describe the composition of the solid understanding of processes such as mantle metasomatism and generation of potassic mafic magmas.