Abstract
Cation exchange experiments were carried out on phlogopite, biotite, and muscovite using cryptand [222] as a complexing agent, dioxane as solvent, and Li as the exchanging cation. The results indicate greater than 90% exchange of the analyzed cations K+, Rb+, and Sr++ in phlogopite and biotite after two days. Similar results for the exchange in muscovite are observed but it is apparently slower. The amount of exchange observed for mica depends mainly on pH, time and the exchanging cation at a constant temperature. Residues of the mineral phase were also investigated by X-ray diffraction and a significant change of the interlayer spacing was detected. Some samples of the residue were analyzed for Li content. The compositions of the treated samples were in good agreement with the determined exchange of K+.
Similar content being viewed by others
References
Bashour, I., and R. M. Carlson. 1984. Rubidium as controlling factor in potassium release from micaceous minerals. Soil Sci. Soc. Am. J. 48: 1010–1013.
Bracke, G., P. Krauß, and M. Satir. 1992. Selective exchange of the cations K+, Rb+ and Sr++ of phlogopite, biotite and muscovite with the cryptand [222]. Beih. z. Eur. J. Mineral. 4.
Dietrich, B., J.-M. Lehn, and J. P. Sauvage. 1973. Cryptates: Control over bivalent/monovalent cation selectivity. J. Chem. Soc. Chem. Comm. 15–16.
Faure, G. 1986. Principles of Isotope Geology. New York: J. Wiley & Sons.
Geostandards Newsletter. 1989. Speciallssue July 1989, 13.
Jäger, E., E. Niggli, and H. Baethge. 1963. Two standard minerals, biotite and muscovite, for Rb-Sr and K-Ar age determinations, sample Bern 4 B and Bern 4 M from a gneiss from Brione, Valle Verzasca (Switzerland). Schweiz. Min. Petr. Mitt. 43: 465–470.
Keppler, H. 1990. Ion exchange reactions between dehy-droxylated micas and salt melts and the crystal chemistry of the interlayer cations in micas. Amer. Mineral. 75: 529–538.
Lehn, J.-M., and J. P. Sauvage. 1975. [222]-Cryptates: Stability and selectivity of alkali and alkaline-earth macro-bicylic complexes. JACS 97: 6700–6707.
Reed, M. G., and A. D. Scott. 1966. Extractable potassium in grundite illite: I. Method of extraction. Soil Sci. 102: 115–122.
Reichenbach, H. Graf von. 1968. Cation exchange in the interlayers of expansible layer silicates. Clay Miner. 7: 331–341.
Reichenbach, H. Graf von, and C. I. Rich. 1978. Preparation of dioctahedral vermiculites from muscovite and subsequent exchange properties. 9th International Congress of Soil Science. 72: 709–719.
Satir, M. 1974. Rb/Sr-Altersbestimmungen an Glimmern der westlichen Hohen Tauern: Interpretation und geologische Bedeutung. Schweiz. Mineral. Petrogr. Mitt. 54: 213–228.
Satir, M., and H. Friedrichsen. 1986. Geochronological and stable isotope investigations of polymetamorphic rocks (Western Tauern Window, Austria). Neues Jahrbuch Miner. Abh. 154/3: 313–334.
Scales, P. J., T. W. Healy, and D. F. Evans. 1988. The zeta potential of muscovite mica: Counterion complexation by a macrocyclic ligand. J. Colloid Interface Sci. 124: 391–395.
Scott, A. D., and S. J. Smith. 1966. Susceptibility of interlayer potassium in micas to exchange with sodium. Clays & Clay Miner. 14th National Conference on Clays and Clay Minerals: 69–81.
Weber, E., S. Patai, and Z. Rappoport. 1989. Crown Ethers and Analogs. New York: John Wiley & Sons.
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bracke, G., Satir, M. & Krauß, P. The Cryptand [222] for Exchanging Cations of Micas. Clays Clay Miner. 43, 732–737 (1995). https://doi.org/10.1346/CCMN.1995.0430609
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1346/CCMN.1995.0430609