Magmas are mixtures of melt, crystals and dissolved gasses with or without crystalline material (Mysen and Richet 2019). They play an important role in igneous processes particularly those influenced by their viscosity, density, and other physical properties. Much of the research to date has used quenched melts (or glasses) as proxies for studying the melt portion of magmas. Studies of glasses and melts at elevated temperatures or in-situ have been carried out since the late 1970s (cf., Waseda and Egami 1979; Exarhos et al. 1988) but remain difficult experiments to perform due to technical difficulties dealing...

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