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首页> 美国政府科技报告 >In Situ Chemical Characterization of Mineral Phases in Lunar Granulite Meteorite Northwest Africa 5744
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In Situ Chemical Characterization of Mineral Phases in Lunar Granulite Meteorite Northwest Africa 5744

机译：非洲西北部农历麻粒陨石中矿物相的原位化学表征5744

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摘要

Northwest Africa (NWA) 5744 meteorite is a granulitic and troctolitic lunar breccia which may represent nearly pristine lunar crust (Fig. 1). NWA 5744 is unusually magnesian compared to other lunar breccias, with bulk (Mg/(Mg+Fe)) approximately 0.79 (1, 2). Inspection shows impactor content is likely to be very minor, with low Ni content and a lack of metal grains. Some terrestrial contamination is present, evidenced by calcite within cracks. NWA 5744 has notably low concentrations of incompatible trace elements (ITEs) (2). The goal of this study is to attempt to classify this lunar granulite through analyses of in situ phases.

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