Hydrous Components in the Nominally Anhydrous Minerals

名义无水矿物中的含水成分

• 批准号: 0337816
• 负责人: George Rossman
• 金额: --
• 依托单位: California Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-01-01 至 2008-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0337816&HistoricalAwards=false
• 关键词: Hydrous; Components; Nominally; Anhydrous; Minerals

Many minerals that are nominally anhydrous contain low concentrations of water or hydroxide ion bound in distinct sites in their structure. These components influence the physical and chemical properties of the host phase to an extent far disproportionate to their actual concentrations and constitute a globally significant reservoir of bound water in planet Earth. Research in this award will be directed at characterizing the chemical form and concentrations of these components in natural minerals and related synthetic materials, relating the hydrous components to the physical and chemical properties of the host phases, and investigating the significance of the hydrous components to the terrestrial geologic system. An additional specific focus of the current research period will be the analyses of sub-microscopic inclusions of liquid water that occur in minerals and determining their role in the inventory of total hydrous components in minerals and the conditions under which they form in natural systems. Broader impacts of this project will be in the training of a female graduate student; the development of new methodology for hydrogen isotope analysis that could be used for other applications; support for undergraduates during the summer and in the academic year; continuation of the maintenance of the mineral spectroscopy website http://minerals.gps.caltech.edu.

许多名义上无水的矿物在其结构的不同位置含有低浓度的水或氢氧根离子。 这些成分对主相的物理和化学性质的影响与其实际浓度远远不成比例，并构成了地球上全球重要的结合水库。 该奖项的研究将旨在表征天然矿物和相关合成材料中这些成分的化学形态和浓度，将含水成分与主相的物理和化学性质联系起来，并研究含水成分对陆地地质系统。当前研究阶段的另一个具体重点是分析矿物中存在的液态水的亚微观包裹体，并确定它们在矿物中总含水成分的库存中的作用以及它们在自然系统中形成的条件。该项目更广泛的影响将在于培养一名女研究生；开发可用于其他应用的氢同位素分析新方法；在暑期和学年期间为本科生提供支持；继续维护矿物光谱网站 http://minerals.gps.caltech.edu。