exsolution


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exsolution

(ˌɛksəˈluːʃən)
n
(Geological Science) geology the process by which a homogenous solid solution, esp molten rock, separates into its constituent minerals upon cooling
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Zuev, "Oxygen content, cobalt oxide exsolution and defect structure of the double perovskite PrBa[Co.sub.2][O.sub.6-[delta]]," Journal of Materials Chemistry A, vol.
[21, 22] also revealed that the Fe isotopes fractionate during fluid exsolution and that the ore-forming fluid is enriched in light isotopes relative to ore-related igneous rocks.
The reactivation and fragmentation of this crystal mush can trigger re-melting episodes, volatile exsolution, and an increase in the pressure of the whole system, all of which are expected conditions during an eruption episode (Parmigiani, Huber, & Bachmann, 2014).
Johnson, "The role of volatile exsolution and sub-solidus fluid/rock interactions in producing high [sup.56]Fe/[sup.54]Fe ratios in siliceous igneous rocks," Geochimica et Cosmochimica Acta, vol.
The Fe-Ti oxides and the diaspore-boehmite needles all formed in the sapphire as a result of epigenetic solid exsolution (cf.
A textural intergrowth between calcite and dolomite can be interpreted as the result of exsolution of dolomite from calcite.
After exsolution from austenite, the carbon atom is inactive in solid phase and hardly turns into secondary graphite.
At high pressure, supercritical fluids, which are formed by fractional crystallisation of vapoursaturated melts, trigger the exsolution of a few wt-% [H.sub.2]O, C[O.sub.2], and other volatiles and coexist with mafic melts or segregates from these compounds, that move independently through the crust [63].
The extent of albite exsolution is variable, most probably because of difference in the composition of the original homogeneous alkali feldspar grains and/ or degree and rate of their undercooling below the crystallization temperature.
Kamenetsky, V.S., Wolfe, R.C., Eggins, S.M., Mernagh, T.P., and Bastrakov, E., 1999, Volatile exsolution at the Dinkidi Cu-Au porphyry deposit, Philippines: A melt-inclusion record of the initial ore-forming process: Geology, v.
The transparency is due to the lack of exsolution lamellae in some samples.