Abstract
VERMICULITE and chlorite minerals occur commonly in soils where they may be an important source of magnesium and micronutrients. Vermiculite adsorbs and retains potassium and ammonium preferentially, which makes it particularly important in exchange reactions involving these cations. Like micas, chlorites in soils may weather to vermiculites1,2. Micas are readily altered to vermiculites in the laboratory by the extraction of potassium. It has not, however, been possible to alter unoxidised, true chlorites to vermiculites by extracting the hydroxide sheets using chemical techniques3,4 in the laboratory.
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Ross, G. Experimental alteration of chlorites into vermiculites by chemical oxidation. Nature 255, 133–134 (1975). https://doi.org/10.1038/255133a0
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DOI: https://doi.org/10.1038/255133a0
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