RUI; Solution Calorimetric, Crystallographic, and Phase Equilibria Investigations of the Thermodynamic Properties of Minerals

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• 批准号: 8616403
• 负责人: Guy Hovis
• 金额: $ 20.81万
• 依托单位: Lafayette College
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-04-15 至 1993-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8616403&HistoricalAwards=false
• 关键词: RUI; Solution; Calorimetric; Crystallographic; Phase

This is a continuation of research previously supported by NSF grant EAR83-19084, involving the direct determination of thermodynamic properties of important minerals by solution calorimetry. The research will yyield excess enthalpies and volumes associated with chemical substitution in muscovite- paragonite micas, nepheline- analcite-leucite. Enthalpies of formation will be determined for paragonite and sodalite. Enthalpy changes associated with strain will be measured in crypto-perthites. Excess entropies will be formulated in alkali feldspars by combining calorimetric results with data from phase equilibrium studies. The proposed projects have not been attempted previously and thus will lead to new data on these minerals.

这是先前由NSF支持的研究的延续 授权EAR 83 -19084，涉及直接确定 重要矿物溶解热力学性质 量热法 这项研究将产生多余的脂肪， 与白云母中的化学取代有关的体积， 钠云母、霞石-方沸石-白钨矿。 焓 将确定钠长石和方钠石的形成。 与应变相关的焓变化将在 隐纹长石 超额熵将在 用量热结果与数据相结合的方法研究碱金属长石 相平衡研究。 拟议的项目没有 以前尝试过，因此将导致新的数据， 这些矿物。