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dc.contributor.authorPowell, R.
dc.contributor.authorEvans, K.A.
dc.contributor.authorGreen, E.C.R.
dc.contributor.authorWhite, R. W.
dc.identifier.citationPowell , R , Evans , K A , Green , E C R & White , R W 2019 , ' The truth and beauty of chemical potentials ' , Journal of Metamorphic Geology , vol. Early View .
dc.identifier.otherPURE: 258374219
dc.identifier.otherPURE UUID: 0c9da9c6-f66a-4a67-b666-f089a3a0eabe
dc.identifier.otherRIS: urn:AA7ACA734F78DD702BA814389C11C272
dc.identifier.otherScopus: 85065326347
dc.identifier.otherORCID: /0000-0002-5270-3985/work/59953733
dc.identifier.otherWOS: 000479310300007
dc.description.abstractThis essay in honour of Mike Brown addresses aspects of chemical equilibrium and equilibration in rocks, with a focus on the role that chemical potentials play. Chemical equilibrium is achieved by diffusive attening of chemical potential gradients. The idea of equilibration volume is developed, and the way equilibration volumes may evolve along a pressure-temperature path is discussed. The effect of the environment of an equilibration volume is key to understanding the evolution of the equilibration volume with changing conditions. The likely behaviour of equilibration volumes is used to suggest why preservation of equilibrium mineral assemblages and mineral compositions from metamorphism tends to occur. This line of logic then provides the conceptual support to conventional equilibrium thermodynamic approaches to studying rocks, using, for example, thermobarometry and pseudosections.
dc.relation.ispartofJournal of Metamorphic Geologyen
dc.rightsCopyright © 2019 John Wiley & Sons Ltd. This work has been made available online in accordance with the publisher’s policies. This is the author created, accepted version manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at
dc.subjectChemical potentialen
dc.subjectElastic solidsen
dc.subjectEquilibration volumeen
dc.subjectEquilibrium thermodynamicsen
dc.subjectGE Environmental Sciencesen
dc.subjectQD Chemistryen
dc.titleThe truth and beauty of chemical potentialsen
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews.School of Earth & Environmental Sciencesen
dc.description.statusPeer revieweden

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