Papers

Peer-reviewed
Jul, 2009

Fe-Mg partitioning between perovskite and ferropericlase in the lower mantle

AMERICAN MINERALOGIST
  • Takeshi Sakai
  • ,
  • Eiji Ohtani
  • ,
  • Hidenori Terasaki
  • ,
  • Naoki Sawada
  • ,
  • Yusuke Kobayashi
  • ,
  • Masaaki Miyahara
  • ,
  • Masahiko Nishijima
  • ,
  • Naohisa Hirao
  • ,
  • Yasuo Ohishi
  • ,
  • Takumi Kikegawa

Volume
94
Number
7
First page
921
Last page
925
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.2138/am.2009.3123
Publisher
MINERALOGICAL SOC AMER

Fe-Mg partitioning between perovskite and ferropericlase in the MgO-FeO-SiO2 system has been studied up to about 100 GPa at around 2000 K using a laser-heated diamond anvil cell (LHDAC). The compositions of both phases were determined by using analytical transmission electron microscopy (ATEM) on the recovered samples. Present results reveal that the Fe-Mg apparent partition coefficient between perovskite and ferropericlase [K-D(Pv/Fp) = ((XFeXMgFp)-X-Pv)/((XMgXFeFp)-X-Pv)] decreases with increasing pressure for a constant FeO of the system, and it decreases with increasing FeO content of ferropericlase. The gradual decrease of K-D(Pv/FP) with increasing pressure is consistent with the spin transition in ferropericlase Occurring in the broad pressure range from 50 to 100 GPa at around 2000 K.

Link information
DOI
https://doi.org/10.2138/am.2009.3123
CiNii Articles
http://ci.nii.ac.jp/naid/80020485730
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000268149400007&DestApp=WOS_CPL
ID information
  • DOI : 10.2138/am.2009.3123
  • ISSN : 0003-004X
  • eISSN : 1945-3027
  • CiNii Articles ID : 80020485730
  • Web of Science ID : WOS:000268149400007

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