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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Characterising the CI and CI-like carbonaceous chondrites using thermogravimetric analysis and infrared spectroscopy

Fig. 5

3 μm/11 μm versus H2O (wt. %) determined from TGA (a) and phyllosilicate abundances (vol. %) (b) from King et al. (2015). The similarity in H2O abundance, 3 μm/11 μm ratio and phyllosilicate abundance suggests that Ivuna and Orgueil experienced equal degrees of aqueous alteration. Relative to Y-82162, Y-980115 contains a higher abundance of H2O and phyllosilicate and has an increased 3 μm/11 μm ratio, suggesting that it experienced less dehydration

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