The effects of sulfur on near-liquidus phase relations of highly reduced mafic silicate melts with implications on magmatism in Mercury

Supplementary Material to “The effects of sulfur on near-liquidus phase relations of highly reduced mafic silicate melts with implications on magmatism in Mercury” Yishen Zhang1*, Rajdeep Dasgupta1 1 Department of Earth, Environmental and Planetary Sciences, Rice University, 6100 Main Street, MS 126, Houston, TX 77005, USA *Corresponding author: [email protected] Contents 1. Supplementary Figures 2. Supplementary Dataset 1. Supplementary Figures Fig. S1. Estimated orthopyroxene proportion (in wt.%) in each starting mix as a function of temperature. Dashed lines connect experiments of each starting mix. Vertical bars show the 1σ standard deviation and is not observable if it is smaller than the symbol. Fig. S2. Ternary diagram showing the composition of sulfides in our experiments. The results are expressed in mol.%. The circled region represent data of Boujibar et al. (2025). 2. Supplementary Dataset Table S1. Averaged and 1σ standard deviation of the composition of quartz in the experiments (in wt.%). Run No. Na SiO2 TiO2 Al2O3 FeO MnO MgO CaO Na2O K2O Total G804 1 98.65 0.00 0.10 0.34 0.04 0.07 0.01 0.02 0.00 99.23 B683 5 99.13 0.01 0.14 0.01 0.01 0.06 0.04 0.01 0.01 99.45 0.25 0.01 0.02 0.02 0.01 0.01 0.01 0.01 0.01 B678 1 98.53 0.00 0.14 0.22 0.02 0.06 0.04 0.03 0.00 99.04 B689 7 98.51 0.01 0.11 0.02 0.01 0.04 0.03 0.01 0.01 98.76 0.46 0.01 0.01 0.02 0.01 0.01 0.02 0.01 0.01 B685 3 98.09 0.01 0.35 0.01 0.01 0.23 0.14 0.06 0.02 98.93 0.29 0.01 0.16 0.02 0.01 0.12 0.08 0.02 0.02 B686 5 99.30 0.01 0.25 0.01 0.00 0.11 0.09 0.04 0.01 99.85 0.70 0.01 0.08 0.01 0.01 0.04 0.03 0.03 0.01 B734 8 101.53 0.01 0.11 0.23 0.00 0.03 0.04 0.01 0.01 101.97 0.68 0.01 0.02 0.07 0.00 0.02 0.01 0.02 0.01 B696 6 100.47 0.01 0.10 0.16 0.01 0.03 0.04 0.03 0.01 100.87 0.28 0.01 0.02 0.04 0.01 0.02 0.01 0.01 0.01 B700 7 98.42 0.00 0.13 0.29 0.01 0.06 0.04 0.03 0.01 99.01 0.34 0.01 0.09 0.13 0.01 0.06 0.04 0.02 0.01 B697 5 99.68 0.02 0.12 0.27 0.01 0.04 0.06 0.02 0.01 100.25 0.50 0.02 0.04 0.06 0.01 0.03 0.03 0.02 0.01 B709 3 99.64 0.00 0.14 0.19 0.00 0.04 0.04 0.00 0.00 100.06 0.66 0.00 0.03 0.01 0.00 0.03 0.00 0.00 0.00 B710 8 99.57 0.01 0.33 0.23 0.00 0.15 0.14 0.04 0.01 100.49 1.17 0.01 0.45 0.05 0.01 0.24 0.23 0.08 0.01 B712 7 99.73 0.01 0.14 0.16 0.01 0.05 0.06 0.02 0.01 100.19 0.59 0.01 0.03 0.03 0.01 0.02 0.01 0.02 0.01 a number of points analyzed.