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Letter. The effect of zinc sulfide on phase transformations of ferrihydrite

  • Mitch Loan EMAIL logo , Gordon M. Parkinson and William R. Richmond†
From the journal American Mineralogist

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.

Received: 2003-9-10
Accepted: 2004-5-27
Published Online: 2015-3-28
Published in Print: 2005-1-1

© 2015 by Walter de Gruyter Berlin/Boston

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