Hydrous High Pressure Minerals and Glasses

这项研究将继续在上一笔赠款上开始的关于硅酸盐矿物及其相关系统的振动性质的工作。利用红外光谱和拉曼光谱，结合固体核磁共振光谱和从头算分子轨道计算，研究高压水化硅酸盐矿物的结构和热力学性质，水在铝硅酸盐熔体中的溶解机理和组成关系，以及硅和铝在铝硅酸盐熔体和玻璃中的配位随压力的变化。这将促进对广泛的地球材料的理解和建模的能力。

This study will continue work begun on a previous grant on the vibrational properties of silicate minerals and related systems. Infrared and Raman spectroscopy will be used, coupled with solid state nuclear magnetic resonance (NMR) spectroscopy and ab initio molecular orbital calculations, to study the structures and thermodynamic properties of high pressure hydrated silicate minerals, the mechanism and composition dependence of water solubility in aluminosilicate melts, and pressure-dependent coordination changes of Si and Al in aluminosilicate melts and glasses. This will further the understanding of and the capability of modelling of a broad range of earth materials.