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Melt thermodynamics and divalent element partitioning between anorthite and CMAS liquids

Miller, S. A. and Asimow, Paul D. and Burnett, D. S. (2005) Melt thermodynamics and divalent element partitioning between anorthite and CMAS liquids. Geochimica et Cosmochimica Acta, 69 (10). A822. ISSN 0016-7037. http://resolver.caltech.edu/CaltechAUTHORS:20120830-152746549

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Abstract

Quantifying the effect of melt composition on trace element partitioning in natural systems has been hampered by correlated variations in mineral chemistry, temperature, and pressure. We have isolated the influence of melt composition on divalent element (Mg, Ca, Sr, Ba) partitioning between stoichiometric anorthite and a range of synthetic melts. Data were obtained from electron microprobe analysis of anorthite rims from dynamic crystallization experiments. Melt compositions contain near constant SiO_2, CaO/Al_2O_3 ranging from 0.8-1.6, and MgO from 1-15 wt. %. Holding X_(mineral), T, and P constant, we observe partitioning behavior that varies systematically with melt chemistry.


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Additional Information:© 2005 Pergamon-Elsevier Science Ltd.
Record Number:CaltechAUTHORS:20120830-152746549
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120830-152746549
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:33725
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:30 Aug 2012 22:32
Last Modified:23 Jul 2013 17:56

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