Exsolve:
Mineralogy (of two minerals in solid solution)
to separate from one another at a critical point in temperature [Collins Dictionary]
Noted in “Yellowstone Is One of the World’s Largest Magmatic Systems – And It May be Missing a Key Volcanic Gas,” Rosie McCall, Discover:
As the magma flows towards the surface, the decrease in pressure causes the gasses to exsolve from the liquid magma and continue to rise to the surface, eventually escaping into the atmosphere – a process known as outgassing.
Never seen exsolve before. Neither has my spelling checker.
