We present here several laboratory analyses performed on the freshly fallen Mukundpura CM chondrite. Results of infrared transmission spectroscopy, thermogravimetry analysis and reflectance spectroscopy show that Mukundpura is mainly composed of phyllosilicates. The rare earth trace elements composition and ultrahigh resolution mass spectrometry of the soluble organic matter (SOM) give results consistent with CM chondrites. Finally, Raman spectroscopy shows no signs of thermal alteration of the meteorite. All the results agree that Mukundpura has been strongly altered by water on its parent body. Comparison of the results obtained on the meteorite with those of other chondrites of known petrologic types lead to the conclusion that Mukundpura is similar to CM1 chondrites, which differs from its original classification as a CM2.

中文翻译：

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新鲜碳质球粒陨石 Mukundpura 中有机化合物的矿物学、化学和成分：CM1 还是 CM2？

我们在此展示了对刚下落的 Mukundpura CM 球粒陨石进行的几项实验室分析。红外透射光谱、热重分析和反射光谱的结果表明，Mukundpura 主要由页硅酸盐组成。稀土微量元素组成和可溶性有机物 (SOM) 的超高分辨率质谱给出的结果与 CM 球粒陨石一致。最后，拉曼光谱显示陨石没有热变的迹象。所有的结果都同意 Mukundpura 已经被其母体上的水强烈改变。将在陨石上获得的结果与已知岩石学类型的其他球粒陨石的结果进行比较，得出的结论是 Mukundpura 类似于 CM1 球粒陨石，这与其最初分类为 CM2 不同。