Structural Investigation of Iron-Bearing Silicate Melts at High Temperatures

高温含铁硅酸盐熔体的结构研究

• 批准号: 8915830
• 负责人: Shiv Sharma
• 金额: $ 18.22万
• 依托单位: University of Hawaii
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-02-15 至 1992-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8915830&HistoricalAwards=false
• 关键词: Structural; Investigation; Iron; Bearing; Silicate

This project will investigate the structures of iron-bearing volcanic magmas under conditions of controlled temperature and oxygen pressure with Raman spectrometry. Glasses quenched from the high-temperature experiments will be analyzed by electron microprobe for bulk chemical analysis, by Raman spectroscopy for comparison with melts, by Mossbauer spectroscopy for determination of ferric iron and to observe iron structural trends, and by heavy liquid methods for characterization of their densities. The results of these experiments will help to determine the degree to which the structures of iron-bearing glasses are representative of those of the corresponding melts, and the degree to which the latter may vary in response to changes in composition, temperature, and oxygen fugacity. The results are expected to be of value in the fields of igneous petrology, volcanology, and materials science.

本项目将研究含铁矿物的结构 在受控温度条件下的火山岩浆， 氧气压力与拉曼光谱。 玻璃淬火从 高温实验将通过电子分析 用拉曼光谱法进行大量化学分析的微探针 通过穆斯堡尔谱学， 三价铁的测定及铁的结构观察 趋势，并通过重液体方法表征其 密度 这些实验的结果将有助于 决定了含铁的结构 玻璃是相应熔体的代表， 以及后者可能响应于 成分、温度和氧逸度的变化。 的 研究结果在火成岩研究领域具有一定的应用价值 岩石学、火山学和材料科学。