HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Weed, S. B. Articles by Leonard, R. A. Search for Related Content PubMed Articles by Weed, S. B. Articles by Leonard, R. A. Agricola Articles by Weed, S. B. Articles by Leonard, R. A.

Effect of K⁺-Uptake by K⁺-Depleted Micas on the Basal Spacing¹

ABSTRACT

Potassium was introduced into expanded, i.e., K⁺-depleted, micas by (i) adding about 0.5 symmetry of KCl to a chromatographic column of expanded mica plus sand and (ii) by equilibrating suspensions of Ca²⁺ or Mg²⁺-saturated expanded mica with 0.5, 1.0, 1.5, or 2.0 symmetry of KCl. Two expanded biotites readily formed a regular alternation of 10 and 14A spacings whereas two muscovites did not develop such a phase. A phologopite yielded this phase only at the lowest concentration of K⁺ tested. Regular alternation developed most readily in the Ca²⁺-saturated minerals. Development of regular interstratification did not appear to be related to the gross surface-charge-density of the minerals, but did seem to be positively related to the content of octahedral Fe.

¹ Contribution from the Department of Soil Science, North Carolina Agr. Exp. Sta., Raleigh. Published with the approval of the Director of Research as Paper no. 2357 of the Journal Series. Presented before a joint session of Div. S-2 and S-5, Soil Science Society of America, Aug. 25, 1966, at Stillwater, Okla.

² Associate Professor of Soils and former Instructor in Soils now Research Soil Scientist, USDA, ARS, SWC, Watkinsville, Georgia, respectively.

Received for publication June 6, 1967. Accepted for publication January 9, 1968.