...-equilibration textures that occurred in an environment without free water. The process of re-equilibration involved a melt-mediated interface-coupled dissolution-reprecipitation that took place over a few days to produce textures that are commonly observed in igneous and anatectic systems. Thus, the composition...

... of tourmalines are not a part of one evolutionary series. Rather, the differences in their chemistries as well their mutual microtextural relations, can be best explained by growth of tourmaline from pegmatitic melts followed by episodic re-equilibration during discrete geological events. The euhedral, coarse...

..., attributed to LiCl), hydrous fluid mediated the dissolution–reprecipitation of the fluorapatite. This fluid corresponds to similarly described Li-rich fluids which were suggested to have re-equilibrated the mineralogical assemblage at the Volta Grande mine. * Author for correspondence: Felipe Emerson...

... and melts, condense from the gas, and also during surface-mediated gas–solid reactions. Here we show that the latter reactions cause Ca, Na, Mg, Ba, Sr and Pb to be rapidly redistributed from basaltic glass to sulfate–oxide coatings over durations of 1 hour at 800 °C. How elements behave influences...

...Kendra J. Lynn; Jessica M. Warren Abstract Hydrogen is a rapidly diffusing monovalent cation in nominally anhydrous minerals (NAMs, such as olivine, orthopyroxene, and clinopyroxene), which is potentially re-equilibrated during silicate melt-rock and aqueous fluid-rock interactions in massif...

...., 2015 ). However, the non-availability of experimentally driven partition coefficient for the monazite-garnet pair restricts similar applications in natural rocks ( Jiao et al., 2021 ). This can be resolved by comparing the partition coefficient values for equilibrated natural monazite-garnet pairs...

..., 2017 ; Simonetti et al., 2006 ; Vance et al., 2003 ). By analyzing phases that grew or were re-equilibrated during deformation, such as monazite, titanite, epidote, garnet, mica, or apatite ( Campani et al., 2010 ; Gordon et al., 2021 ; Janots et al., 2009 ; Odlum and Stockli, 2020 ; Peverelli et...

... al. , 2019 ). Secondary clear garnet forms as rims at porphyroblast margins and surrounding mineral inclusions, these re-equilibrated secondary rims are more texturally and compositionally homogeneous than primary clear and cloudy garnet. Garnet is one of the most studied minerals in metamorphic...

... Giuncana, northern Sardinia ( Fig. 1a , Cruciani et al., 2015a , b ). Here, the largest eclogite body hundreds of metres in thickness, preserves relics of the eclogitic assemblage in the core, whereas re-equilibration into amphibolite-facies is observed at the contact with the host micaschists...

... event and the timing of gold deposition. The difficulties mainly arise from the scarcity of suitable dating minerals/mineral domains directly related to gold precipitation that remain closed to isotope re-equilibration during subsequent hydrothermal events. Xenotime and monazite crystals occur...

.../s00410-015-1175-y . Faryad S.W. Klápová H. Nosál L. ( 2010 ) Mechanism of formation of atoll garnet during high-pressure metamorphism . Mineralogical Magazine , 74 , 111 – 126 . Geisler T. Schaltegger U. Tomaschek F. ( 2007 ) Re-equilibration of zircon in aqueous...

...) Photomicrograph of N 2 –CH 4 gaseous phase inclusion in a quartz-omphacite grain hosted by garnet. (d) Photomicrograph showing the presence of re-equilibrated fluid inclusions in matrix quartz grain. Figure 5 (a–c) Photomicrographs showing the typical tube-shaped biphase aqueous inclusions in omphacite...

... of concentrations, with Cs, Rb, K, and U characterized by negative anomalies, and Sb, Ba, Pb, and Th showing an opposite behavior. Mafic rocks re-equilibrated under eclogite-facies conditions show similar trace-element patterns even if they are characterized by the depletion in almost all elements (except Sb, Pb...

... crystallization due to undercooling of the melts, re-equilibration during protracted cooling, or variable interaction of the minerals with an external 18 O-enriched fluid. Estimates of the primary δ 18 O H2O and δD H2O signature for H 2 O in equilibrium with the pegmatite-forming melt indicates values...

... at 422 ± 14 Ma, align with kyanite-stable conditions during Caledonian processes. Monazite U–Pb ages from the same sample ( c. 648 ± 11 Ma) provide additional constraints, indicating a correlation between early high-grade metamorphism and fluid-mediated monazite (re)growth. Whereas garnet-producing...

... ± As-S rich melt ± elemental arsenic according to Sharp et al. s reaction (1985, their reaction 1): FeAsS(arsenopyrite) + 0.5 S2(g) = FeS2(pyrite) + As(s or liq). However, our modeled system is a fluid-mediated Fe-As-S system, where pyrite and arsenopyrite coexistence is affected by O2(g...

... apatite, the REEs have not. Models involving radial diffusion into spherical apatite grains at the temperatures of the experiments show complete re-equilibration of the halogens, but changes in the REE concentrations affecting only the outer few micrometers. We conclude that the rate of chemical...

... of the microlite group of minerals. In a similar way, the primary Zr-Hf-U-bearing tantalite-(Mn) experienced late-stage local re-equilibration, giving rise to the formation of secondary Zr-Hf-U-depleted tantalite-(Mn) and other Zr- or U-rich mineral inclusions in an open fluid-mediated system. The behaviors of Zr...

... in apatite, biotite, and amphibole of some samples are partly influenced by post-magmatic re-equilibration, as has been suggested earlier ( Zhang et al. 2012 , Teiber et al. 2014 ). In contrast, apatite shows stronger resilience to post-magmatic alteration, and has proved to be an ideal and reliable...

..., replacing primary minerals. There were also later metasomatic processes, associated with kimberlite melts ( Solov’eva et al., 1997 ). The term texturally equilibrated mica has been applied to description of deep-seated xenoliths since the publication by Carswell et al. (1975) . It was extended...