Magmatic sulfides are formed by the crystallization of immiscible sulfide melts within mafic-ultramafic magmas. The composition of the sulfide melt depends on magmatic conditions (pressure, temperature and oxygen fugacity) and the composition of the coexisting silicate melt. While equilibrium partitioning of chalcophile elements between sulfide and silicate melts is relatively well constrained, the partitioning of lithophile and volatile elements between these two phases is almost unexplored. Here we present multiple analytical investigations of lithophile and volatile element occurrence in experimental sulfide blebs synthetized in internally heated pressure vessels and rapidly quenched. Experiments were performed at a pressure of 200 MPa and a temperature of 1200°C with the sulfide melt segregating from mafic silicate melts containing 2 to 3 wt% H2O, and 0 to 1 wt% Cl. Our quenched samples show that the sulfide melt partially started to separate into a monosulfide solid solution (MSS) and a residual sulfide melt hosting roundish fluid inclusions. This suggests the exsolution of a volatile phase during quench. We used Fourier Transform InfraRed (FTIR) spectroscopy, Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) and Atom Probe Tomography to characterize H2O, Cl, Na, K, and Ca occurrence, distribution and concentration within the quenched sulfide blebs. Preliminary results point towards H2O dissolution in the sulfide melt in the OH form, accompanied by Cl, Na, K and Ca. MSS crystallization upon quench concentrates these elements in the residual sulfide melt, leading to exsolution of fluid inclusions within it.