Equilibrium high-temperature Fe isotope fractionation between fayalite and magnetite: An experimental calibration

被引：131
|
作者：
Shahar, Anat [1 ]
Young, Edward D. [1 ,2 ]
Manning, Craig E. [1 ]
机构：
[1] Univ Calif Los Angeles, Dept Earth & Space Sci, Los Angeles, CA 90095 USA
[2] Univ Calif Los Angeles, Inst Geophys & Planetary Phys, Los Angeles, CA 90095 USA
来源：
EARTH AND PLANETARY SCIENCE LETTERS | 2008年 / 268卷 / 3-4期
基金：
美国国家科学基金会;
关键词：
iron isotope; thermometer; igneous rocks; high-temperature; three-isotope exchange; magnetite;
D O I：
10.1016/j.epsl.2008.01.026
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The iron isotopic fractionation factor between magnetite and fayalite was measured at high temperature in a piston-cylinder apparatus. For the first time, the three-isotope method [Matsuhisa, J., Goldsmith, J. R., and Clayton, R. N., 1978. Mechanisms of hydrothermal crystallisation of quartz at 250 degrees C and 15 kbar. Geochim. Cosmochim. Acta 42, 173-182.] has been used to determine equilibrium fractionation between two minerals directly. The experimentally-determined temperature-dependent iron isotope fractionation between fayalite and magnetite is described by 10(3)ln alpha(57)(Mag-Fa) congruent to Delta(57) FeMag-Fa = 0.30 (+/- 0.024) x 10(6) / T-2. The equation predicts measurable fractionation at magmatic temperatures. Our work bears on the magnitude of Fe isotope fractionation attending differentiation in magmatic systems and provides a new isotope thermometer for coexisting fayalite and magnetite. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：330 / 338
页数：9
相关论文
共 50 条
  • [21] Experimental calibration of zirconquartz oxygen isotope fractionation
    Trail, D.
    Bindeman, I. N.
    Watson, E. B.
    GEOCHIMICA ET COSMOCHIMICA ACTA, 2008, 72 (12) : A954 - A954
  • [22] HIGH-TEMPERATURE CRYSTAL-CHEMISTRY OF FAYALITE
    SMYTH, JR
    AMERICAN MINERALOGIST, 1975, 60 (11-1) : 1092 - 1097
  • [23] Equilibrium iron isotope fractionation between Fe(II) and hydrous ferric oxide
    Wu, Lingling
    Beard, Brian L.
    Roden, Eric E.
    Johnson, Clark M.
    GEOCHIMICA ET COSMOCHIMICA ACTA, 2010, 74 (12) : A1145 - A1145
  • [24] NUCLEATION AND GROWTH OF MAGNETITE FILMS ON FE IN HIGH-TEMPERATURE WATER
    FRIGGENS, HA
    HOLMES, DR
    CORROSION SCIENCE, 1968, 8 (12) : 871 - &
  • [25] REDETERMINATION OF FAYALITE-MAGNETITE-QUARTZ EQUILIBRIUM BETWEEN 650 AND 850 DEGREESC
    HEWITT, DA
    TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1976, 57 (12): : 1020 - 1020
  • [26] An experimental study of Fe isotope fractionation between silicate melt and spinel
    Doyle, P. M.
    Berry, A. J.
    Coggon, R. M.
    Weyer, S.
    GEOCHIMICA ET COSMOCHIMICA ACTA, 2009, 73 (13) : A303 - A303
  • [27] Empirical calibration of the oxygen isotope fractionation between quartz and Fe-Mg-chlorite
    Lacroix, Brice
    Vennemann, Torsten
    GEOCHIMICA ET COSMOCHIMICA ACTA, 2015, 149 : 21 - 31
  • [28] Experimental determination of the equilibrium Fe isotope fractionation between Feaq2+ and FeSm (mackinawite) at 25 and 2°C
    Guilbaud, Romain
    Butler, Ian B.
    Ellam, Rob M.
    Rickard, David
    Oldroyd, Anthony
    GEOCHIMICA ET COSMOCHIMICA ACTA, 2011, 75 (10) : 2721 - 2734
  • [29] HIGH-TEMPERATURE MAGNETOSTRICTION OF MAGNETITE
    KLAPEL, GD
    SHIVE, PN
    JOURNAL OF GEOPHYSICAL RESEARCH, 1974, 79 (17): : 2629 - 2633
  • [30] HIGH-TEMPERATURE MAGNETOSTRICTION OF MAGNETITE
    KLAPEL, GD
    SHIVE, PN
    TRANSACTIONS-AMERICAN GEOPHYSICAL UNION, 1973, 54 (11): : 1071 - 1071
12345