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Abstract

 

This article in SSSAJ

  1. Vol. 35 No. 5, p. 838-842
     
    Received: May 21, 1970
    Accepted: June 2, 1971


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doi:10.2136/sssaj1971.03615995003500050054x

Iron Hydroxy Interlayers in Soil Clay1

  1. P. C. Singleton and
  2. M. E. Harward2

Abstract

Abstract

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.

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