Behaviour of K, Na, Si, and Ti species in S- and C-dominated complex atmospheres: In both panels the calculated partial pressures of selected species are shown as a function of total volatile pressure. In the left panel a, a S-dominated complex atmosphere yields a decrease in SiO and TiO partial pressure due to the formation of SiS and TiS, respectively. In the right panel b similar behaviour is seen in a C-dominated complex atmosphere where the partial pressures of Na and K decrease due to the formation of NaCN and KCN, respectively. Calculations for both panels were done for a fixed BSE lava ocean surface temperature of 3000 K.