Experimental study of radium partitioning between anorthite and melt at 1 atm

Journal Article · Thu Mar 08 00:00:00 EST 2007 · American Mineralogist

DOI:https://doi.org/10.2138/am.2007.2640· OSTI ID:940494

Miller, S; Burnett, D; Asimow, P; Phinney, D; Hutcheon, I

We present the first experimental radium mineral/melt partitioning data, specifically between anorthite and a CMAS melt at atmospheric pressure. Ion microprobe measurement of coexisting anorthite and glass phases produces a molar D{sub Ra} = 0.040 {+-} 0.006 and D{sub Ra}/D{sub Ba} = 0.23 {+-} 0.05 at 1400 C. Our results indicate that lattice strain partitioning models fit the divalent (Ca, Sr, Ba, Ra) partition coefficient data of this study well, supporting previous work on crustal melting and magma chamber dynamics that has relied on such models to approximate radium partitioning behavior in the absence of experimentally determined values.

• Research Organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 940494
• Report Number(s): UCRL-JRNL-229336; AMMIAY; TRN: US0807146
• Journal Information: American Mineralogist, Vol. 92, Issue 8-9; ISSN 0003-004X
• Country of Publication: United States
• Language: English

Related Subjects

58 GEOSCIENCES
07 ISOTOPES AND RADIATION SOURCES
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ANORTHITE
ATMOSPHERIC PRESSURE
GLASS
MAGMA
MELTING
RADIUM
STRAINS