RUI: Acquisition of X-Ray Powder Diffraction Instrumentation with Heating Stage to Support Solution Calorimetric Research and Undergraduate Research on Mineral Thermal Expansion

1028953Hovision这笔赠款支持购买一台带温控样品池的功率x射线衍射仪，以便能够在拉斐特学院对重要岩石矿物的相变和晶体结构特征进行动力学研究。对于硅酸盐固溶体包括MIC、长石、长石类和沸石的热力学行为，X射线衍射量热法将是对其热力学行为研究的补充。实验热力学数据提供了地壳深部相行为的模型，而X射线衍射研究将阐明支配地球上重要矿物固体溶液热膨胀的结晶学和晶体化学原理。这个本科院校的PI积极地让学生利用最先进的结晶学和热力学技术及其在科学研究问题中的应用来进行体验式学习。***

1028953HovisThis grant supports acquisition of a power x-ray diffractometer with temperature controlled sample cell to permit kinetic studies of phase changes and crystallographic structure characterization of important rock forming minerals at Lafayette College. The XRD would complement the PIs calorimetric investigations of the thermodynamic behavior of solid solutions of silicates including mics, feldspars and feldspathoids and zeolites. Experimental thermodynamic data informs models of behavior of phases in the deep crust and XRD studies will elucidate the crystallographic and crystal-chemical principles that govern thermal expansion of Earth important mineral solid solutions. The PI at this undergraduate institution actively engages students in experiential learning with state-of-the-art techniques in crystallography and thermodynamics and their application to scientific research problems. ***