The effect of zinc sulfide on phase transformations of ferrihydrite

Mitch Loan; Gordon M. Parkinson; William R. Richmond

doi:10.2138/am.2005.1468

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Letter| January 01, 2005

The effect of zinc sulfide on phase transformations of ferrihydrite

Mitch Loan;

Mitch Loan

Nanochemistry Research Institute and A.J. Parker CRC for Hydrometallurgy, Curtin University of Technology, GPO Box U 1987, Perth 6845, Australia

*

Present address: Materials Surface Science Institute (MSSI), University of Limerick, Limerick, Ireland.

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Gordon M. Parkinson;

Gordon M. Parkinson

Nanochemistry Research Institute and A.J. Parker CRC for Hydrometallurgy, Curtin University of Technology, GPO Box U 1987, Perth 6845, Australia

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William R. Richmond

William R. Richmond †

Nanochemistry Research Institute and A.J. Parker CRC for Hydrometallurgy, Curtin University of Technology, GPO Box U 1987, Perth 6845, Australia

†

E-mail: [email protected]

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Author and Article Information

Mitch Loan

*

Present address: Materials Surface Science Institute (MSSI), University of Limerick, Limerick, Ireland.

Nanochemistry Research Institute and A.J. Parker CRC for Hydrometallurgy, Curtin University of Technology, GPO Box U 1987, Perth 6845, Australia

Gordon M. Parkinson

Nanochemistry Research Institute and A.J. Parker CRC for Hydrometallurgy, Curtin University of Technology, GPO Box U 1987, Perth 6845, Australia

William R. Richmond †

Nanochemistry Research Institute and A.J. Parker CRC for Hydrometallurgy, Curtin University of Technology, GPO Box U 1987, Perth 6845, Australia

†

E-mail: [email protected]

Publisher: Mineralogical Society of America

Received: 10 Sep 2003

Accepted: 27 May 2004

First Online: 02 Mar 2017

Online ISSN: 1945-3027

Print ISSN: 0003-004X

American Mineralogist (2005) 90 (1): 258–261.

https://doi.org/10.2138/am.2005.1468

Abstract

The addition of ZnS particles to suspensions of ferrihydrite promotes the formation of the more crystalline phases goethite [α-FeO(OH)] and hematite (α-Fe₂O₃) at pH ~ 2–3 and 85 °C. This previously undocumented effect appears to arise from surface-mediated reduction of Fe³⁺ species to Fe²⁺ with associated dissolution of ZnS.