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Selective Adsorption of Magnesium Ions by Vermiculite
Author(s) -
Peterson F. F.,
Rhoades J.,
Arca M.,
Coleman N. T.
Publication year - 1965
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1965.03615995002900030031x
Subject(s) - vermiculite , sorption , chemistry , magnesium , adsorption , leaching (pedology) , ion exchange , ion , soil water , saturation (graph theory) , inorganic chemistry , environmental chemistry , biotite , cation exchange capacity , clay minerals , mineralogy , nuclear chemistry , geology , soil science , materials science , metallurgy , organic chemistry , quartz , paleontology , mathematics , combinatorics
Contrary to the usual generalization that the Ca ion is preferred over the Mg ion in ion exchange sorption by soils and clay minerals, Mg ions were found to be preferred markedly over Ca ions in exchange sorption by vermiculite when the percentage Mg‐saturation exceeded about 30 to 40. This behavior might be expected from consideration of the common occurrence of Mg‐vermiculites in comparison with the commonly wide Ca:Mg ratios of the natural leaching waters which are responsible for the conversion of biotite to vermiculite.