Experimental partitioning of uranium between liquid iron sulfide and liquid silicate: Implications for radioactivity in the Earth's core

Kevin T. Wheeler, David Walker, Yingwei Fei, William G. Minarik, William F. McDonough

Research output: Contribution to journalArticlepeer-review

41 Citations (Scopus)

Abstract

Measurable uranium (U) is found in metal sulfide liquids in equilibrium with molten silicate at conditions appropriate for a planetary magma ocean: 1-10 GPa, 1750-2100 °C, 0-28 wt% S, and fO2 2 log units below IW. However, the transfer of U from metal sulfide to silicate under our experimental conditions is so complete that insufficient U would remain so as to be of any importance to the core's heat budget. U content in the sulfide phase increases strongly with S content but shows no significant variability with either pressure or temperature. Maximum DUsulfide/silicate is 0.001 while most values are considerably lower.

Original languageEnglish
Pages (from-to)1537-1547
Number of pages11
JournalGeochimica et Cosmochimica Acta
Volume70
Issue number6
DOIs
Publication statusPublished - 2006 Mar 15
Externally publishedYes

ASJC Scopus subject areas

  • Geochemistry and Petrology

Fingerprint

Dive into the research topics of 'Experimental partitioning of uranium between liquid iron sulfide and liquid silicate: Implications for radioactivity in the Earth's core'. Together they form a unique fingerprint.

Cite this