The growth of an isolated, stationary gas bubble in a glassmelt is analyzed accounting for the motion of the boundary and the motion of the liquid. The growth of a gas bubble which initally consists of carbon dioxide is studied in a glassmelt whose gaseous composition consists of water vapor, carbon dioxide, sulfide, oxygen and nitrogen. Results obtained by means of a finite difference formulation are presented for the bubble radius, and pressure and composition as a function of time. It is shown that at large times the bubble radius is a linear function of time, and that the bubble pressure is a monotonically decreasing function of time. The distribution of the gaseous species in the glassmelt is also presented as a function of the distance from the bubble surface and of time. It is shown that carbon dioxide and nitrogen diffuse from and to the bubble, respectively, while the other species do not play an important role in the bubble growth. Comparisons between a quasi-stationary approximation and the full transient solution indicate that the boundary motion slows the rate of bubble growth at long times.