Characterization of Earth Materials

将开发使用各种现代分析技术演示地球材料特性的教育模块。每个模块将模拟真实的研究经验，通过展示研究相关问题的层次结构和集成的图像数据集，学生将访问分析结果，以开发自己的测试和解释。每个模块将包括地质背景信息、分析技术的能力和局限性、与研究相关的问题、从介观到原子嵌入分析结果（例如x射线衍射数据、成分和化学数据等）的图像，以及文献中报道的类似项目的链接。这些模块将促进以发现为基础的学习，因为学生将集中自己的观察并选择适当的测试。将在这些模块中呈现的地球材料将包括来自常见岩石类型和土壤（代表各种地球过程）的样品，工业感兴趣的材料（例如矿物和能源勘探；环境修复），以及令人兴奋的新研究领域，如地球微生物学和矿物表面化学。将使用的分析仪器位于蒙大拿州立大学成像和化学分析实验室，包括配备背散射电子探测器的扫描电子显微镜、配备光谱仪的阴极发光探测器、能量色散光谱仪和冷冻制备台；x射线粉末衍射；俄歇电子能谱仪；x射线光电子能谱仪；飞行时间二次离子质谱仪；和原子力显微镜。所有的图像和光谱将被数字化并通过万维网发布。多媒体教育模块的开发将在蒙大拿州立大学伯恩斯电信中心的协助下完成。

MOGK 9809752 Educational modules will be developed which demonstrate the characterization of Earth materials using a variety of modern analytical techniques. Each module will simulate authentic research experiences through presentation of a hierarchy of research-related questions and integrated datasets of images and analytical results will be accessed by students to develop their own tests and interpretations. Each module will include information on the geologic context, capabilities and limitations of analytical techniques, research-related questions, images that range in scale from mesoscopic to atomic embedded analytical results (e.g. X-ray diffraction data, compositional and chemical data, etc.), and links to similar projects that have been reported in the literature. The modules will promote discovery-based learning as students will focus their own observations and choose appropriate tests. Earth materials that will be presented in these modules will include samples from common rock types and soils (representing a variety of Earth processes), materials of interest to industry (e.g., mineral and energy exploration; environmental remediation), and exciting new fields of investigation such as geomicrobiology and the surface chemistry of minerals. The analytical instruments that will be used are housed in the Imaging and Chemical Analysis Laboratory at Montana State University, and include scanning electron microscope equipped with back-scattered electron detector, cathodoluminescence detector with spectrometer, energy dispersive spectrometer, and cryo-preparation stage; X-ray powder diffraction; Auger Electron Spectrometer; X-ray photoelectron spectrometer; Time-of-flight Secondary Ion Mass Spectrometer; and Atomic Force Microscopes. All images and spectra will be digitized and distributed through the WWW. Development of the multi-media educational modules will be done with the assistance of the Burns Telecommunications Center at Montana State University.