Actions for Effect of Sulfur on Siderophile Element Partitioning Between Olivine and Martian Primary Melt

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Effect of Sulfur on Siderophile Element Partitioning Between Olivine and Martian Primary Melt

Author
Usui, T.
Published
[2011].
Physical Description
1 electronic document
Additional Creators
Jones, J. H., Righter, K., and Shearer, C. K.
Online Version

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Summary
Since olivine is a common early crystallizing phase in basaltic magmas that have produced planetary and asteroidal crusts, a number of experimental studies have investigated elemental partitioning between olivine and silicate melt [e.g., 1, 2, 3]. In particular, olivine/melt partition coefficients of Ni and Co (DNi and DCo) have been intensively studied because these elements are preferentially partitioned into olivine and thus provide a uniquely useful insight into the basalt petrogenesis [e.g., 4, 5]. However, none of these experimental studies are consistent with incompatible signatures of Co [e.g., 6, 7, 8] and Ni [7] in olivines from Martian meteorites. Chemical analyses of undegassed MORB samples suggest that S dissolved in silicate melts can reduce DNi up to 50 % compared to S-free experimental systems [9]. High S solubility (up to 4000 ppm) for primitive shergottite melts [10] implies that S might have significantly influenced the Ni and Co partitioning into shergottite olivines. This study conducts melting experiments on Martian magmatic conditions to investigate the effect of S on the partitioning of siderophile elements between olivine and Martian primary melt.
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Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 20110005444.
JSC-CN-22841.
42nd Lunar and Planetary Science Conference; 7-11 Mar. 2011; The Woodlands, TX; United States.
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Copyright, Distribution as joint owner in the copyright.
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