Effects of melt composition on Fe3+/Fe2+ in silicate melts: a step to model ferric/ferrous ratio in multicomponent systems
Effects of melt composition on Fe3+/Fe2+ in silicate melts: a step to model ferric/ferrous ratio in multicomponent systems
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熔体成分对硅酸盐熔体中 Fe3 /Fe2 的影响:模拟多组分系统中铁/亚铁比率的步骤
DOI:
10.1007/s00410-015-1119-6
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发表时间:
2015
影响因子:
3.5
通讯作者:
Holtz F.
中科院分区:
文献类型:
--
作者:
Borisov A;Behrens H;Holtz F.
The effect of Al2O3, MgO and total iron on the ferric/ferrous ratio in silicate melts was investigated in model silicate melts in the temperature range 1400–1550 °C at 1 atm total pressure. The experiments were done mostly in air and partially in pure CO2. It is demonstrated that an increase in Al2O3concentration in a basaltic melt results in a moderate decrease of Fe3+/Fe2+ratio. In contrast, the increase in Al2O3in more silicic melts results in a much more pronounced decrease of Fe3+/Fe2+ratio. The increase of MgO concentration in a basaltic melt results in a moderate increase of Fe3+/Fe2+ratio but has a negligible effects in more silicic melts. The different behavior of Al2O3and MgO in basaltic and more silicic melts indicates that at constantT–fO2conditions, the effects of melt composition on ferric/ferrous ratio cannot be predicted accurately as a function of ΣdiXiwherediare fixed empirical coefficients andXiare mole fractions of the main oxide component in silicate melts. We suggest an alternative approach which accounts for the interaction of cations in complex silicate melts. Based on the data obtained in this study, an equation predicting the ferric/ferrous ratio of ultramafic to silicic melts at air conditions with changing SiO2, TiO2, Al2O3, total iron, MgO and P2O5is proposed.
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影响因子:
3.9
作者:
R. Majumdar;D. Lahiri
通讯作者:
D. Lahiri
DOI:
--
发表时间:
1976
期刊:
影响因子:
--
作者:
P. Deines;R. H. Nafziger;G. Ulmer;E. Woermann
通讯作者:
E. Woermann
影响因子:
3.5
作者:
Borisov, Alexander;Behrens, Harald;Holtz, Francois
通讯作者:
Holtz, Francois
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
J. Schuessler;R. Botcharnikov;H. Behrens;V. Misiti;C. Freda
通讯作者:
C. Freda
影响因子:
3.1
作者:
A. Borisov;C. McCammon
通讯作者:
C. McCammon