Iron Hydroxy Interlayers in Soil Clay1
- P. C. Singleton and
- M. E. Harward2
The less than 2µ fraction of the A horizon of two western Oregon soils, a Typic Haplumbrept and a Xeric Haplohumult, were found to contain an intergrade mineral with properties intermediate to chlorite and montmorillonite. The mineral was subjected to a series of treatments designed to effect a progressive dissolution of associated Fe, Al, Si, and Mg compounds. Analysis of treatment extracts and measurements made of d-spacings and cation exchange capacity before and after treatments indicated that the hydroxy material occupying the interlayer spaces of the 2:1 layers of the mineral may consist of Fe as well as Al and Mg.Please view the pdf by using the Full Text (PDF) link under 'View' to the left.
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