RUI: Energies of Mineral Processes

9303814 Hovis这个研究项目将侧重于矿物过程的能源。特别令人感兴趣的方面包括通过研究K-Na混合的焓和体积而确定的三元长石和霞石-钾硅石体系中的混合能，通过相平衡(Solvus)测量得到的霞石-钾硅岩的混合吉布斯能和混合熵，通常假定为T和P为常数的混合焓和混合体积对这些变量的依赖，以及与其他矿物过程相关的能量，如斜方辉石和碱性长石中的出溶。采用的主要技术包括溶液量热法、滴式量热法、室温和高温X射线粉末衍射法。

9303814 Hovis This research project will focus on energies of mineral processes. Aspects of particular interest include the energies of mixing in ternary feldspars and the nepheline- kalsilite system as determined by investigating the enthalpies and volumes of K-Na mixing, the Gibbs energies and entropies of mixing for nepheline-kalsilite as yielded by phase equilibrium (solvus) measurements, the dependence of enthalpies and volumes of mixing, normally assumed to be constant with T and P, on these variables, and the energies associated with other mineral processes such as order- disorder in orthopyroxenes and exsolution in alkali feldspars. The major techniques to be utilized include solution calorimetry, drop calorimetry, and room- and high- temperature x-ray powder diffraction.