High apatite solubility in peraluminous melts
Web12 de jul. de 2003 · Solubility of excess alumina in hydrous granitic melts in equilibrium with peraluminous minerals at 700–800 °C and 200 MPa, and applications of the … WebApatite solubility in peraluminous liquids: Experimental data and an extension of the Harrison-Watson model. New experimental data at 750-1000°C, 2-5 kbar, and for …
High apatite solubility in peraluminous melts
Did you know?
Web8 de mar. de 2024 · We provide new experimental data of monazite, xenotime and U-Th-bearing cheralite solubility in slightly peralkaline to peraluminous granitic melts using dissolution and reverse (i.e.,... Web3 de abr. de 2024 · Nevertheless, these data further support the idea that (1) higher alumina activity environments of peraluminous melts are reflected in Al in zircon concentrations and (2) peraluminous melts can exhibit measureable changes in alumina activity over the temperature range of zircon crystallization. Both topics are addressed in the next two …
Web12 de abr. de 2024 · 1 Introduction. Lithium isotope fractionation has been extensively used to investigate Earth surface processes such as water-rock interaction (Chan et al., 2002) and continental weathering (Pistiner & Henderson, 2003; Rudnick et al., 2004; Vigier et al., 2009; von Strandmann et al., 2024).The large mass difference (∼17%) between 6 Li and … Web1 de out. de 1992 · Apatite solubility in peraluminous liquids: Experimental data and an extension of the Harrison-Watson model. New experimental data at 750–1000°C, 2–5 kbar, and for peraluminous melt compositions show a dramatic increase of apatite solubilities and phosphorus melt contents when compared to metaluminous or peralkaline …
Web15 de out. de 2024 · In contrast, in peraluminous melts the solubility of apatite is enhanced due to the formation of AlPO 4 complexes, so that a granitic melt with an ASI of 1.3 can have up to ∼0.63 wt.% P 2 O 5 at apatite saturation (following saturation models of Wolf and London, 1994). Web30 de abr. de 2004 · The fact that the solubility of apatite in metaluminous and peralkaline magmas is a function of melt composition and temperature was confirmed experimentally Watson and Capobianco, 1981, Green and Watson, 1982, Harrison and Watson, 1983, as was the considerably higher apatite solubility in peraluminous melts, where the …
WebMontel et al. tion when they occur as unfractionated felsic rocks, it is (1988) showed that apatite is soluble in peraluminous clear that had the melts that produced those granites melts, while Wolf and London (1994) found experimen- undergone extended fractional crystallisation, signifi- tally that the solubility of apatite in a haplogranite …
Web28 de fev. de 2024 · The concentrations of Nb and Ta in the peraluminous melt increased compared to those in the subaluminous melt upon dissolution of microlite, as well as of pyrochlore, whereas these concentrations decreased upon dissolution of … sharepoint ghost filesWebTwo separate series of hydrous experiments involving (1) imposing apatite saturation on a series of igneous rock compositions from basanite to rhyolite, and (2) crystallizing similar natural rock compositions … sharepoint github list formattingWeblower. This contrasts with the relatively high solubility of H 2O in LiAlSi 3O 8 melt relative to albite and orthoclase melts and implies that excess Li 2O is not contributing to the content of nonbridging O atoms in the melt as efficiently as the other alkalies. For the peraluminous compositions, the solubility of H 2O decreases with the addition pop by snowday promo codeWebThe solubility of apatite in anatectic melt plays an important role in controlling the trace-element compositions and isotopic signatures of granites. The compositions of glassy melt inclusions and nanogranitoids in migmatites and granulites are compared with the results of experimental studies of apatite solubility to evaluate the factors that influence apatite … pop bypass surgeryWebIn melts saturated with sillimanite or mullite, the effect of high Al content may be lower for the Qz-Or than for the Qz-Ab eutectic. The depression of the liquidus temperatures may … pop by songWebFor the peraluminous compositions, the solubility of H 2O decreases with the addition of 2 wt% Al 2O 3 to the HPG8 composition, then increases strongly with the further ad-dition … pop bys ideasWeb1 de dez. de 2024 · The inconsistency between measured and predicted phosphorus concentrations for the lower-temperature inclusions, however, cannot be explained by problems with the electron microprobe analyses of rehomogenized nanogranitoids and glassy melt inclusions, sequestration of phosphorus in major minerals and/or monazite, … pop by snowday dallas