Chemical Stability of FeOOH at High Pressure and Temperature, and Oxygen Recycling in Early Earth History**

被引：16

作者：

Koemets, Egor ^{[1
,2
]}

Fedotenko, Timofey ^{[3
]}

Khandarkhaeva, Saiana ^{[1
]}

Bykov, Maxim ^{[1
,4
]}

Bykova, Elena ^{[4
]}

Thielmann, Marcel ^{[1
]}

Chariton, Stella ^{[1
]}

Aprilis, Georgios ^{[3
]}

Koemets, Iuliia ^{[1
]}

Glazyrin, Konstantin ^{[4
]}

Liermann, Hanns-Peter ^{[4
]}

Hanfland, Michael ^{[5
]}

Ohtani, Eiji ^{[6
]}

Dubrovinskaia, Natalia ^{[3
]}

McCammon, Catherine ^{[1
]}

Dubrovinsky, Leonid ^{[1
]}

机构：

[1] Univ Bayreuth, Bayer Geoinst, D-95440 Bayreuth, Germany

[2] Univ Montpellier, Inst Charles Gerhardt Montpellier, UMR CNRS 5253, F-34095 Montpellier 5, France

[3] Univ Bayreuth, Mat Phys & Technol Extreme Condit, Crystallog Lab, D-95440 Bayreuth, Germany

[4] DESY, Photon Sci, D-22607 Hamburg, Germany

[5] ESRF European Synchrotron, CS40220, F-38043 Grenoble 9, France

[6] Tohoku Univ, Grad Sch Sci, Dept Earth Sci, Sendai, Miyagi 9808578, Japan

来源：

EUROPEAN JOURNAL OF INORGANIC CHEMISTRY | 2021年 / 2021卷 / 30期

关键词：

High-pressure chemistry; Iron; Oxygen; Redox chemistry; Structure elucidation; MANTLE; WATER; IRON; STATE; FE2O3; H2O;

D O I：

10.1002/ejic.202100274

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Goethite, alpha-FeOOH, is a major phase among oxidized iron species, commonly called rust. We studied the behavior of iron (III) oxyhydroxide up to 81 GPa and 2100 K using in situ synchrotron single-crystal X-ray diffraction. At high pressure-temperature conditions FeOOH decomposes forming oxygen-rich fluid and different mixed valence iron oxides (previously known phases of Fe2O3, Fe3O4, Fe5O7, and novel Fe7O10 and Fe6.32O9). Rust is known to form as a byproduct of anoxygenic prokaryote metabolism that took place massively from about 3.8 billion years (Ga) ago until the Great Oxidation Event (GOE) similar to 2.2 Ga ago. Rust was buried on the ocean floor and was transported into the mantle as a consequence of plate tectonics (started similar to 2.8 Ga ago). Our results suggest that recycling of rust in Earth's mantle contributes to redox conditions of the early Earth and formation of oxygen-rich atmosphere.

引用

页码：3048 / 3053

页数：6

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