The formation and structure of iron-dominated planetesimals

Open Access

Fig. 4

Summary of the Fe/Ni ratios for the core and mantle fractions of the four pure end-member bulk compositions versus fO₂. The Fe/Ni ratios of Fe meteorites from Grewal et al. (2024) are overlaid in panel 1. For the cores of Earth and Mars, Fe/Ni ratios range from 16 to 20 (Dreibus & Palme 1996; Khan et al. 2018), and from hundreds to thousands in rocky mantles and differentiated stony meteorites (Palme & O’Neill 2014).

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