The pH-dependent transformation of schwertmannite to goethite at 25°C
Authors:
- U. SchwertmannUSU. Schwertmann
- L. CarlsonLCL. Carlson
- 1 March 2005
- journal article
- Published by Mineralogical Society in Clay Minerals
- Vol. 40 (1) , 63-66
Abstract
At 25°C, synthetic schwertmannite, a common iron compound in acid mine drainage, completely converted in water to a sulphate-containing goethite within ~100 days. The rate of transformation doubled as the pH increased from 4.0 to 7.2. In deviation from its normal acicular habit, the goethite appeared as spherical aggregates.Keywords
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