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On the Possibility of Removal of Non-Structural Iron from Kaolinite-Group Minerals

Published online by Cambridge University Press:  09 July 2018

K. Bahranowski ,
E. M. Serwlcka ,
L. Stoch  and
P. Strycharski
K. Bahranowski
Affiliation:
Institute of Geology and Mineral Deposits, Academy of Mining and Metallurgy, al. Mickiewicza 30, 30-059 Krakow
E. M. Serwlcka
Affiliation:
Institute of Catalysis and Surface Chemistry, Polish Academy of Sciences, ul. Niezapominajek, 30-239 Krakow
L. Stoch
Affiliation:
Interbranch Institute of Building and Refractory Materials, Academy of Mining and Metallurgy, Al. Mickiewicza 30, 30-059 Krakow, and
P. Strycharski
Affiliation:
Faculty of Chemistry, Jagiellonian University, ul. Krupnicza 3, 30-063 Krakow, Poland
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Abstract

The efficiency of removal of the free iron from kaolinite-group minerals by means of acid leaching was followed by chemical, AES, XRD and ESR analyses. Structural Fe responsible for the g = 4 ESR signal represented only a small fraction of Fe impurity in the natural samples. The remaining non-structural Fe was found to exist both as forms easily extractable with acid, as well as deposits that were moderately resistant to the acid treatment. At least part of the latter could be associated with the broad g ~- 2 ESR signal typical of clustered Fe 3+ ions, which in most samples persisted even after prolonged acid leaching. The data demonstrate that procedures commonly used to clean kaolinite of free iron are by no means 100% efficient. In particular, frequently encountered quantitative association of the Fe remaining in the deferrated solids with purely structural Fe, homogeneously distributed in the kaolinite matrix, is probably significantly overestimated and should be treated with great caution.

Type
Research Article
Information
Clay Minerals , Volume 28 , Issue 3 , September 1993 , pp. 379 - 391
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1993

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References

Angel, B.R. & FIall, P.L. (1972) Electron spin resonance studies of kaolins. Proc. Int. Clay Conf. Madrid, 47–59.Google Scholar
Angel, B.R. & Vincent, W.E.J. (1978) Electron spin resonance studies of iron oxides associated with the surface of kaolins. Clays Clay Miner. 26, 263–272.CrossRefGoogle Scholar
Angel, B.R., Jones, J.P.E. & Fiall, P.E. (1974) Electron spin resonance of doped synthetic kaolinites, I. Clay Miner. 10, 247–256.CrossRefGoogle Scholar
Badyoczek FI., Abgarowicz|E. & Kowai.ska-Smoi.en J. (1982) Iron in kaolins. Pp. 228-247 in: Kaolins. Wyd. Geolog. Warszawa (in Polish).Google Scholar
Brindley, G.W. & Youell, R.F. (1951) A chemical determination of the “tetrahedral” and “octahedral” aluminium ions in a silicate. Acta Cryst. 4, 495—496.Google Scholar
Brindley, G.W., Kao, C.-C., Harrison, J.L., Lipsicas, M. & Raythatha, R. (1986) Relation between structural disorder and other characteristics of kaolinites and dickites. Clays Clay Miner. 34, 239–249.Google Scholar
Chaikum, N. & Carr, R.M. (1987) Electron spin resonance studies of halloysites. Clay Miner. 22, 287–296.CrossRefGoogle Scholar
Coyne, L.M., Costanzo, P.M. & Theng, B.K.G. (1989) Luminescence and ESR studies of relationship between 0” centres and structural iron in natural and synthetically hydrated kaolinites. Clay Miner. 24, 671–693.Google Scholar
Cuttler, A.H. (1980) The behaviour of a synthetic 57Fe-doped kaolin: Mossbauer and electron paramagnetic resonance studies. Clay Miner. 15, 429–444.Google Scholar
De Endredy, A.S. (1963) Estimation of free iron oxides in soils and clays by a photolytic method. Clay Miner. Bull. 5, 209–217.Google Scholar
Flaschka, H. & Abdine, H. (1956) Zur komplexometrischen Titration von Aluminium und Eisen und der Summe beider. Fresenius Z. Anal. Chem. 152, 77–85.Google Scholar
Fysh, S.A., Cashion, J.D. & Clark, P.E. (1983) Mossbauer effect studies of iron in kaolin. I. Structural iron. Clays Clay Miner. 31, 285–292.Google Scholar
Fysh, S.A. & Clark, P.E. (1983) A Mossbauer study of the iron mineralogy of acid leached bauxite. Hydrometallurgy 10, 285–303.Google Scholar
Gastuche, M.-C., Delmon, B. & Vielvoye, L. (1960) La cinetique des reactions heterogenes. Attaque du reseau silico-aluminique des kaolinites per l’acide chlorhydrique. Bull. Soc. Chim. France 1, 60–70.Google Scholar
Gastuche, M.-C. & Fripiat, J.J. (1962) Acid dissolution technique applied to the determination of the structure of clay controlled by physical methods. Pp. 121-138 in: Science of Ceramics, Academic Press, London.Google Scholar
Goodman, B.A., Nadeau, P.H. & Chadwick, J. (1988) Evidence for the multiphase nature of bentonites from Mossbauer and EPR spectroscopy. Clay Miner. 23, 147–159.Google Scholar
Goodman, B.A. & Nadeau, P.H. (1988) Identification of oxide impurity phases and distribution of structural iron in some diagenetic illitic clays as determined by Mossbauer spectroscopy. Clay Miner. 23, 301–308.CrossRefGoogle Scholar
Hall, P.L. (1980) The application of electron spin resonance spectroscopy to studies of clay minerals: I. Isomorphous substitutions and external surface properties. Clay Miner. 15, 321–335.Google Scholar
Herbillon, A.J., Mestdagh, M.M., Vielvoye, L. & Derouane, E.G. (1976) Iron in kaolinite with special reference to kaolinite from tropical soils. Clay Miner. 11, 201–219.CrossRefGoogle Scholar
Hinckley, D.N. (1963) Variability in “crystallinity” values among the kaolin deposits of the coastal plain of Georgia and South Carolina. Clays Clay Miner. 13, 229–235.Google Scholar
Horvath, I. (1976) Sāureangriff auf das Fire-Clay-Mineral. Schriftenr. geol. Wiss., Berlin 5, 83–89.Google Scholar
Ianicelli, J. (1976) High extraction magnetic filtration of kaolin clay. Clays Clay Miner. 24, 64–68.Google Scholar
Jefferson, D.A., Tricker, M.J. & Winterbottom, A.P. (1975) Electron microscopic and Mossbauer spectroscopic studies of iron-stained kaolinite minerals. Clays Clay Miner. 23, 355–360.Google Scholar
Jones, J.P.E., Angel, B.R. & Hall, P.E. (1974) Electron spin resonance studies of doped synthetic kaolinites, II. Clay Miner. 10, 257–270.Google Scholar
Komusinski, J., Stoch, L. & Dubiel, S.M. (1981) Application of electron paramagnetic resonance and Mossbauer spectroscopy in the investigation of kaolinite-group minerals. Clays Clay Miner. 29, 23–30.Google Scholar
Meads, R.E. & Malden, P.J. (1975) Electron spin resonance in natural kaolinites containing Fe3+ and other transition metal ions. Clay Miner. 10, 313–345.Google Scholar
Mehra, O.P. & Jackson, M.L. (1960) Iron oxide removal from soils and clays by a dithionite citrate system buffered with sodium bicarbonate. Clays Clay Miner. 7, 317–327.Google Scholar
Mestdagh, M.M., Vielvoye, L. & Herbillon, A.J. (1980) Iron in kaolinite: II. The relationship between kaolinite crystallinity and iron content. Clay Miner. 15, 1–13.Google Scholar
Mestdagh, M.M., Herbillon, A.J., Rodrique, L. & Rouxhet, P.G. (1982) Evaluation du role du ferstructuralsur la cristallinitē des kaolinites. Bull. Mineral. 105, 457—166.Google Scholar
Osthaus, B.B. (1956) Kinetic studies on montmorillonite and nontronite by the acid-dissolution technique. Clays Clay Miner. 4, 301–321.Google Scholar
Rokosz, A. & Strycharski, P. (1988) Reliability of synthetic powder standards for atomic emission spectrometry. Fresenius Z. Anal. Chem. 332, 144–147.Google Scholar
Stoch, L. (1974) Clay Minerals. Wyd. Geolog. Warszawa, 191, 463–474.(in Polish).Google Scholar
Stone, W.E.E. & Torres-Sanchez, R.-M. (1988) Nuclear magnetic resonance spectroscopy applied to minerals. J. Chem. Soc., Faraday Trans. I, 84, 117–132.CrossRefGoogle Scholar
Tsay, F.-D., Chan, S.I. & Manatt, S.L. (1971) Ferromagnetic resonance of lunar samples. Geochim. Cosmochim. Acta 35, 865–875.Google Scholar