Acquisition of Tabletop SEM for the University of Rochester Experimental Geochemistry Laboratory

为罗彻斯特大学实验地球化学实验室购置台式扫描电镜

• 批准号: 1940730
• 负责人: Dustin Trail
• 金额: $ 17.56万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-03-01 至 2022-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1940730&HistoricalAwards=false
• 关键词: Acquisition; Tabletop; SEM; University; Rochester

This Division of Earth Sciences Instrumentation and Facilities Program award supports acquisition of a scanning electron microscope (SEM) to be housed in the Department of Earth and Environmental Sciences at University of Rochester. The SEM is capable of revealing minerals features and chemical composition at the micron-scale with magnification up to 100,000x and will be equipped with an energy dispersive spectrometer which permits spatially resolved compositional analysis. The SEM will be used to investigate the chemistry of synthetic minerals grown in the laboratory that seek to mimic mineral growth phenomena occurring in nature. The SEM will be small format and portable enabling student training in Earth and manmade materials characterization within classroom settings. Local outreach targeted at K-12 teacher training will also benefit from the acquisition.The SEM will support research in experimental igneous petrology including trace element mineral-melt partitioning studies, equilibrium isotope fractionation studies of synthetic and natural minerals, development of crystallization thermobarometers and oxygen fugacity determination methods The instrument will also support other University of Rochester laboratories including: (i) the laboratory for isotope geochemistry which performs measurements of radiogenic and stable isotope compositions of rocks and minerals to better understand history of Earth’s silicate reservoirs; (ii) the structural geology group who study the evolution of mountain belts at many different scales including microstructural analysis of cataclasites and mylonites to understand deformation mechanisms and kinematic evolution; and (iii) the paleomagnetic research group that focuses on the measurement of magnetic remanence (bulk magnetic properties, natural remanent magnetization) of a variety of materials.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.

该地球科学仪器和设施计划奖项支持购买罗切斯特大学地球与环境科学系的扫描电子显微镜（SEM），该扫描电子显微镜能够揭示微米级的矿物特征和化学成分。放大倍数高达 100,000 倍，并将配备能量色散光谱仪，可进行空间分辨成分分析。SEM 将用于研究实验室生长的合成矿物的化学性质。 SEM 将是小型便携式的，可在课堂环境中进行地球和人造材料表征方面的培训，该项目也将受益于此次收购。实验火成岩学研究，包括微量元素矿物熔体分配研究、合成和天然矿物的平衡同位素分馏研究、结晶温压计和氧逸度测定方法的开发该仪器还将支持罗切斯特大学的其他大学实验室包括：（i）同位素地球化学实验室，对岩石和矿物的放射性和稳定同位素组成进行测量，以更好地了解地球硅酸盐储层的历史；（ii）研究许多不同山地带演化的构造地质学小组尺度包括碎裂岩和糜棱岩的微观结构分析，以了解变形机制和运动演化；以及 (iii) 古地磁研究小组，专注于测量该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。