Total envelope mass in Earth masses as a function of the planet mass. The solid lines show the SiO mass while the dotted lines show the mass of H₂/He in the envelope. The SiO mass dominates the total mass budget for planets with M_pl > 0.6 M_⊕. The kink shows the start of the supercritical magma ocean after which the amount of SiO and H₂/He in the envelope increases only by heating the outer parts of the envelope.