Effect of Ca content on equilibrium Ca isotope fractionation between orthopyroxene and clinopyroxene

• Published in: Geochimica et cosmochimica acta Vol. 219; pp. 44 - 56
• Main Authors: Wang, Wenzhong, Zhou, Chen, Qin, Tian, Kang, Jin-Ting, Huang, Shichun, Wu, Zhongqing, Huang, Fang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 15.12.2017
• Subjects: Ca isotopes; Equilibrium fractionation; First-principle calculations; Opx and cpx; Opx and cpx; First-principle calculations; Ca isotopes; Equilibrium fractionation

Concentration effect on equilibrium inter-mineral isotope fractionation is ubiquitous in solid solution systems, but it is not clear in which concentration range such effect is prominent. Using first-principles calculations, we examine the effect of Ca and Fe contents in orthopyroxene (opx) on its a...