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Geochemical Characterization of the NWA 11273 Lunar Meteorite Using Nondestructive Analytical Techniques: Original, Shocked, and Alteration Mineral Phases
ACS Earth and Space Chemistry ( IF 2.9 ) Pub Date : 2021-05-27 , DOI: 10.1021/acsearthspacechem.0c00329 Jennifer Huidobro 1 , Julene Aramendia 1 , Gorka Arana 1 , Juan Manuel Madariaga 1
ACS Earth and Space Chemistry ( IF 2.9 ) Pub Date : 2021-05-27 , DOI: 10.1021/acsearthspacechem.0c00329 Jennifer Huidobro 1 , Julene Aramendia 1 , Gorka Arana 1 , Juan Manuel Madariaga 1
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A lunar feldspathic breccia meteorite, the Northwest Africa (NWA) 11273, was analyzed to compensate the lack of scientific data available about its mineralogy and geochemistry. In order to obtain a deeper characterization of the sample, a strategy based on the combination of nondestructive spectroscopic techniques such as X-ray fluorescence and Raman spectroscopy is used. Both techniques are being used in spatial missions by the Perseverance Rover, so their combination in the laboratory is here proposed as an optimal strategy to study the complete mineralogy of the sample. In addition to finding the minerals indicated by the Meteoritical Society (anorthite, olivine, pyroxene, kamacite, and troilite), other minor minerals were identified, such as zircon and ilmenite, which are minerals related to the Moon geology, as well as calcite and sulfate which can be considered products of terrestrial weathering. Finally, secondary minerals related to alteration processes were also found, such as hematite, quartz, and anatase. In this work, the alteration processes that gave rise to the detected secondary minerals have been proposed.
中文翻译：
使用无损分析技术对 NWA 11273 月球陨石进行地球化学表征：原始、冲击和蚀变矿物相
对月球长石角砾岩陨石西北非洲 (NWA) 11273 进行了分析，以弥补其矿物学和地球化学科学数据的缺乏。为了获得更深入的样品表征，采用了基于无损光谱技术（如 X 射线荧光和拉曼光谱）组合的策略。Perseverance Rover 正在将这两种技术用于空间任务，因此在此建议将它们在实验室中的组合作为研究样品完整矿物学的最佳策略。除了发现了气象学会指出的矿物（钙长石、橄榄石、辉石、铁纹石和陨石）之外，还发现了其他次要矿物，例如锆石和钛铁矿，它们是与月球地质有关的矿物，以及方解石和硫酸盐，它们可以被认为是陆地风化的产物。最后，还发现了与蚀变过程有关的次生矿物，如赤铁矿、石英和锐钛矿。在这项工作中，已经提出了导致检测到的次生矿物的蚀变过程。
更新日期：2021-06-17
中文翻译：
使用无损分析技术对 NWA 11273 月球陨石进行地球化学表征：原始、冲击和蚀变矿物相
对月球长石角砾岩陨石西北非洲 (NWA) 11273 进行了分析，以弥补其矿物学和地球化学科学数据的缺乏。为了获得更深入的样品表征，采用了基于无损光谱技术（如 X 射线荧光和拉曼光谱）组合的策略。Perseverance Rover 正在将这两种技术用于空间任务，因此在此建议将它们在实验室中的组合作为研究样品完整矿物学的最佳策略。除了发现了气象学会指出的矿物（钙长石、橄榄石、辉石、铁纹石和陨石）之外，还发现了其他次要矿物，例如锆石和钛铁矿，它们是与月球地质有关的矿物，以及方解石和硫酸盐，它们可以被认为是陆地风化的产物。最后，还发现了与蚀变过程有关的次生矿物，如赤铁矿、石英和锐钛矿。在这项工作中，已经提出了导致检测到的次生矿物的蚀变过程。
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