Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
American Mineralogist
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
American Mineralogist; July; v. 94; no. 7; p. 921-925; DOI: 10.2138/am.2009.3123
© 2009 Mineralogical Society of America
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Sakai, T.
Right arrow Articles by Kikegawa, T.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

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

Takeshi Sakai1,*, Eiji Ohtani2, Hidenori Terasaki2, Naoki Sawada2, Yusuke Kobayashi2, Masaaki Miyahara2, Masahiko Nishijima3, Naohisa Hirao4, Yasuo Ohishi4 and Takumi Kikegawa5

1 International Advanced Research and Education Organization, Tohoku University, Sendai 980-8578, Japan
2 Institute of Mineralogy, Petrology, and Economic Geology, Tohoku University, Sendai 980-8578, Japan
3 Institute for Material Research, Tohoku University, Sendai 980-8577, Japan
4 Japan Synchrotron Radiation Research Institute, Hyogo 679-5198, Japan
5 Photon Factory, High Energy Accelerator Research Organization, Tsukuba 305-0801, Japan

Correspondence: * E-mail: t-sakai{at}m.tains.tohoku.ac.jp

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 [KDPv/Fp = (XFePvXMgFp)/(XMgPvXFeFp)] decreases with increasing pressure for a constant FeO of the system, and it decreases with increasing FeO content of ferropericlase. The gradual decrease of KDPv/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.

Key Words: Perovskite • ferropericlase • Fe-Mg partitioning • LHDAC • FIB




This article has been cited by other articles:


Home page
 ScienceHome page
T. Irifune, T. Shinmei, C. A. McCammon, N. Miyajima, D. C. Rubie, and D. J. Frost
Iron Partitioning and Density Changes of Pyrolite in Earth's Lower Mantle
Science, January 8, 2010; 327(5962): 193 - 195.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2010 by Mineralogical Society of America