MRI: Acquisition of X-Ray Diffraction Instrumentation for Mineralogical Research

MRI：购买用于矿物学研究的 X 射线衍射仪器

• 批准号: 1827628
• 负责人: Ivano Aiello
• 金额: $ 14.42万
• 依托单位: San Jose State University Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2018
• 资助国家: 美国
• 起止时间: 2018-09-15 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1827628&HistoricalAwards=false
• 关键词: MRI; Acquisition; Ray; Diffraction; Instrumentation

This Major Research Instrumentation (MRI) award supports the acquisition of a table-top powder X-ray Diffractometer. This powder X-ray Diffractometer analyses solid materials using X-rays to identify their internal composition and crystallographic structure. Successful research conducted with this instrument enables investigators to identify the sources of the minerals in sediments from deep-sea cores collected in a variety of ocean basin worldwide and in regions surrounding hydrothermal black smokers. The Diffractometer is integral part of the undergraduate and graduate students Geology curriculum at Moss Landing Marine Laboratories, San Jose State University and other regional campuses and research institution in the area including the University of California Santa Cruz, the Monterey Bay Aquarium Research Institute, and California State University Monterey Bay. Analysis of data done in this instrument will inform several master student dissertations at all these institutions. The instrument is also integrated in several outreach programs with local schools.The X-Ray Diffractometer provides a fundamental tool for research and education. It benefits provenance and paleoclimate studies on deep-sea cores collected by the International Ocean Discovery Program in the Northwest Australian, Papua New Guinea and Chilean Margins. It is a key analytical tool for studies on silica diagenesis and associated authigenic precipitates in the Gulf of California. The instrumentation is also used for clay mineral analyses on cores form the Axial Seamount to determine the origin of hydrothermal mineral/volcanic glass deposits and for bulk mineralogy analyses of sediment surrounding a hydrothermal black smoker field on the northern East Pacific Rise (Alarcon Rise). The instrument also supports various projects that include the mineralogic interpretation of X-ray fluorescence data from deep-sea cores, mineralogic analysis of cores collected by Remotely Operated Vehicles from cold seeps, mud volcanoes and scheletal carbonates, mineralogic analyses of fish otoliths and changes in coralline algae mineralogic characteristics in relation to ocean acidification.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

该重大研究仪器（MRI）奖支持购买台式粉末X射线衍射仪。这款粉末X射线衍射仪使用X射线分析固体材料，以确定其内部成分和晶体结构。利用这一仪器进行的成功研究使调查人员能够确定在全世界各种海洋盆地和热液黑烟囱周围区域收集的深海岩心沉积物中矿物的来源。衍射仪是莫斯兰丁海洋实验室、圣何塞州立大学和该地区其他地区校区和研究机构（包括加州大学圣克鲁斯分校、蒙特雷湾水族馆研究所和加州州立大学蒙特雷湾分校）的本科生和研究生地质学课程的组成部分。在这个工具中完成的数据分析将通知在所有这些机构的几个硕士生论文。X射线衍射仪还被纳入了与当地学校的几个推广项目中。X射线衍射仪为研究和教育提供了一个基本工具。它有助于对国际海洋发现方案在澳大利亚西北部、巴布亚新几内亚和智利边缘收集的深海岩芯进行物源和古气候研究。它是研究加州湾硅质成岩作用和相关自生沉淀物的关键分析工具。该仪器还用于对轴海山岩芯进行粘土矿物分析，以确定热液矿物/火山玻璃矿床的来源，并用于对东太平洋海隆（阿拉尔孔海隆）北方热液黑烟区周围的沉积物进行大量矿物学分析。该仪器还支持各种项目，包括对深海岩心X射线荧光数据进行矿物学解释，对遥控潜水器从冷泉、泥火山和钙钛矿碳酸盐中收集的岩心进行矿物学分析，鱼类耳石的矿物学分析以及与海洋酸化有关的珊瑚藻类矿物学特征的变化。该奖项反映了NSF的法定使命，通过使用基金会的知识价值和更广泛的影响审查标准进行评估来提供支持。