Oxidation of Ferrous Iron in Vermiculite and Biotite Alters Fixation and Replaceability of Potassium
Oxidation of octahedral ferrous to ferric iron in soil vermiculite clays and biotites increases the potassium-fixation capacity of vermiculites and increases the difficulty of replacing interlayer potassium in biotites. This unexpected effect is believed to be related to an increase in the attractiv...
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Published in | Science (American Association for the Advancement of Science) Vol. 162; no. 3860; pp. 1401 - 1402 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
United States
American Association for the Advancement of Science
20.12.1968
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Subjects | |
Online Access | Get full text |
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Summary: | Oxidation of octahedral ferrous to ferric iron in soil vermiculite clays and biotites increases the potassium-fixation capacity of vermiculites and increases the difficulty of replacing interlayer potassium in biotites. This unexpected effect is believed to be related to an increase in the attractive forces between potassium ions and oxygen ions of the surface layers which is brought about by a tilting of the dipole of the octahedral hydroxyl ions from a perpendicular position to an inclined position with respect to the cleavage plane. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0036-8075 1095-9203 |
DOI: | 10.1126/science.162.3860.1401 |