The "zero charge" partitioning behaviour of noble gases during mantle melting

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doi: 10.1038/nature01708
Authors:Brooker, R. A.; Du, Z.; Blundy, J. D.; Kelley, S. P.; Allan, N. L.; Wood, B. J.; Chamorro, E. M.; Wartho, J. A.; Purton, J. A.
Volume Title:Nature (London)
Source:Nature (London), 423(6941), p.738-741. Publisher: Macmillan Journals, London, United Kingdom. ISSN: 0028-0836
Publication Date:2003
Note:In English. 31 refs.; illus.
Summary:Modelling noble gases during mantle melting is restricted through a lack of data on the mechanism by which the noble gas atoms are incorporated into crystals. Here, new experimental data on clinopyroxene-melt partitioning of a suite of trace elements including Ne, Ar, Kr and Xe are presented. An independent set of atomistic simulations was compiled to compare with these results. Clinopyroxene crystals with composition along the diopside to jadeite solid-solution join were grown from silicate melts. Concentrations of trace cations in crystal and melt were determined by ion-probe, while the noble gases were measured by a UV laser ablation technique. The results show that these gases can be considered as species of 'zero charge' and enter crystal lattices as for cations. Modelling of noble gases during mantle melting, however, requires further data for other crystal phases, but the results give a theoretical framework for this modelling as a function of residual mantle mineralogy. [R.K.H.]
Sections:Experimental mineralogy
Subsections:General
Subjects:Atmosphere; Convection; Degassing; Dynamics; Genesis; Geochemistry; Laboratory studies; Mantle; Melting; Melts; Mineral composition; Models; Noble gases; Partitioning; Silicates; Simulation; Trace elements
Abstract Numbers:03M/3870
Record ID:2003078319
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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