Fig. 3

Normalized abundances of the lithophile (blue) and siderophile (red) elements in the bulk Mercury. Abundances are normalized to Al and CI chondrites and plotted against log of their 50% condensation temperatures (K) at 10 Pa (see Yoshizaki and McDonough (2020)). Volatility trend for Mercury constrains its S content in the core. The predicted S content is consistent with either an extension of the volatile trend for the siderophile and/or and addition of CI chondritic volatiles with 50% condensation temperatures <1000 K. See text for details