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The Use of Clay Particle Morphology Studies to Characterize Industrial Clay Deposits: Examples from Brazil

Published online by Cambridge University Press:  09 July 2018

P. De Souza Santos
P. De Souza Santos*
Affiliation:
Department of Chemical Engineering, Polytechnic School, USP, São Paulo, SP, Brazil
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Abstract

The use of transmission electron microscopy in association with other methods is described for the characterization of Brazilian industrial clays, especially kaolinitic-halloysitic clays. Examples are presented from: (a) tubular 7 Å-halloysites and the characterization of mixtures with ordered and disordered kaolinites in residual china clays; (b) tubular kaolinitic clay from Piedade, São Paulo; (c) platey 10 Å-halloysite from Poģos de Caldas, Minas Gerais; (d) rolled forms similar to 10 Å-tubular halloysite formed by repeated K Ac intercalation in well ordered kaolinite; (e) use of particle shape and size of kaolinite crystals in the São Simão, São Paulo ball clays as orientation for good sanitaryware ball clays; (f) characterization of gibbsite crystals in high alumina gibbsite/kaolinite clays; (g) antigorite as a clay mineral; (h) electron optical studies of thermal phase transformations involving tubular kaolinite, halloysites, antigorite, chrysotile, talc and pyrophyllite mono crystals.

Type
Research Article
Information
Clay Minerals , Volume 28 , Issue 4 , December 1993 , pp. 539 - 553
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1993

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References

Birrell, K.S., Fieldes, M. & Williamson, K.I. (1955) Unusual forms of halloysite. Am. Miner. 40, 122–125.Google Scholar
Brindley, G.W. & Souza Santos, P. (1971) Antigorite, its occurrence as a clay mineral. Clays Clay Miner. 19, 187–193.Google Scholar
Brindley, G.W. & Souza Santos, J.V. (1975a) Nickel containing montmorillonites and chlorites from Brazil, with some remarks from schuchardite. Mineral. Mag. 40, 141–150.Google Scholar
Brindley, G.W. & Souza Santos, J.V. (1975b) Golden colored ferri-nickel chloritic minerals from Morro do Ni'quel, Minas Gerais, Brazil. Clays Clay Miner. 23, 11–19.Google Scholar
Brindley, G.W. & Whan, H.M. (1975) Compositions, structures and thermal behavior of nickel containing minerals in the lizardite-neopouite series (Morro do Ni'quel and Morro do Corisco, Minas Gerais). Am. Miner. 60, 863–870.Google Scholar
Brindley, G.W., Souza Santos, P. & Souza Santos, H. (1963) Mineralogical studies of kaolinite-halloysite clays. 1. Identification problems. Am. Miner. 48, 897–910.Google Scholar
Campos, T.W. & Souza Santos, H.. (1978) Mullite from halloysite from Capo Bonito County, State of Sāo Paulo, Brazil. Ceramica 24, 1–12.(in Portuguese).Google Scholar
Campos, T.W. & Souza Santos, H. & Souza Santos, P. (1976) Mullite development from a fibrous kaolin mineral. J. Am. Cer. Soc. 59, 357–365.CrossRefGoogle Scholar
Duailibi Filho, J. (1982) Study of a new ceramic piroexpanded clay mineral from Ibitiara County, State of Bahia, Brazil. Ceramica (Brazil) 17, 323–331.(in Portuguese).Google Scholar
Hughes, J.C. & Brown, G. (1977) Two unusual minerals in Nigerian soils: (a) fibrous kaolin; (b) bastnaesite. Clay Miner. 12, 319–329.Google Scholar
Kirkman, J.H. (1977) Possible structure of halloysite disks and cylinders observed in some New Zealand rhyolitic tephras. Clay Miner. 12, 199–216.Google Scholar
Kunze, G.W. & Bradley, W.F. (1963) Occurrence of a tubular halloysite in a Texas soil. Clay Miner. 12, 532–527.Google Scholar
Lee, J.H. & Guggenheim, S. (1981) Single crystal X-ray refinement of pyrophyllite-17c. Am. Miner. 66, 350–357.Google Scholar
Leite, C.A. & Souza Santos, H. (1990) Thermal transformations of halloysites: electron optical studies. Ceramica (Brazil) 36, 7–15.(in Portuguese).Google Scholar
Lopes, F.P. & Souza Santos, H. (1987) Electron optical studies of the phases from high temperature transformation of a fibrous kaolin mineral from Piedade, Sāo Paulo, Brazil, (a) Ceramica (Brazil) 28, 25–32. (b) An. Acad. Bras. Ciencias 59, 303–310.(in Portuguese).Google Scholar
Salvatori, M.C. & Souza Santos, H. (1987) Thermal transformation of a pyrophyllite from Diamantina County, State of Minas Gerais: electron optical studies. Ceramica (Brazil) 33, 128–130.(in Portuguse).Google Scholar
Souza Santos, H.. (1989) Thermal transformation of 1:1 and 2:1 clay minerals. 2nd World Congr. Non-metallic Minerals, Beijing. 1, 176–185.Google Scholar
Souza Santos, P. (1989) Brazilian industrial clays; 2nd World Congr. Non-metallic Minerals, Beijing. 497-504.Google Scholar
Souza Santos, P. (1992) Science and Technology of Clays, 2nd ed. Blücher, São Paulo.Google Scholar
Souza Santos, P. & Souza Santos, H. (1978) Effect of repeated potassium acetate intercalation on a kaolin clay: rolled forms of kaolinite. Abstracts Int. Clay Conf. Oxford, 708.Google Scholar
Souza Santos, H. & Yada, K. (1979) Thermal transformation of chrysotile studied by HREM. Clays Clay Miner. 27, 161–169.Google Scholar
Souza Santos, H. & Yada, K. (1983) Thermal transformation of antigorite as studied by electron-optical methods. Clays Clay Miner. 31, 243–250.Google Scholar
Souza Santos, H. & Yada, K. (1988) Thermal transformation of talc as studied by electron means. Clays Clay Miner. 36, 289–300.Google Scholar
Souza Santos, P., Brindley, G.W. & Souza Santos, H.. (1964) Mineralogical studies of kaolinite-halloysite clays. II. Some Brazilian kaolins. Am. Miner. 49, 1543–1548.Google Scholar
Souza Santos, H., Brindley, G.W. & Souza Santos, P. (1965) Mineralogical studies of kaolinite-halloysite clays. III. A fibrous kaolin mineral from Piedade, São Paulo, Brazil. Am. Miner. 50, 619–625.Google Scholar
Souza Santos, P., Brindley, G.W., & Souza Santos, H.. (1966) Mineralogical studies of kaolinite-halloysite clays. IV Platey clay mineral with structural swelling and shrinking characteristics. Am. Miner. 51, 1640–1648.Google Scholar
Souza Santos, H.., Salvatori, M.C. & Souza Santos, P. (1990) Electron microscope study of some Brazilian talcs. Ceramica (Brazil), 36, 127–139.Google Scholar
Souza Santos, J.V., Souza Santos, P. & Souza Santos, H.. (1978) Characterization of some Brazilian nickel clays. Ceramica (Brazil) 24, 434–445.(in Portuguese).Google Scholar
Sudo, T. (1977) Formation of halloysite tubes from spherolitic halloysite. Clays Clay Miner. 25, 155–160.CrossRefGoogle Scholar
Vieira Coelho, A.C. & Poncelet, G. (1991) Gallium, aluminium and mixed gallium-aluminium pillared montmorillonite. Appl. Catal. 77, 304–314.Google Scholar
Virta, R.L. (1992) Clays. Pp. 45-17 in: 1990 Ann. Rep. Bureau of Mines, Washington, USA. Google Scholar
Visconti, Y.S. (1956) Tubular morphology of some Brazilian kaolins. Am. Miner. 41, 67–76.Google Scholar
Wiewiora, A. & Brindley, G.W. (1969) Potassium acetate intercalation in kaolinite and its removal; effect of material characteristics. Proc. Int. Clay Conf. Tokyo 1, 723–729.Google Scholar
Wilson, I.R. & Souza Santos, P. (1981) TEM of Varinhas, Mogi das Cruzes, Brazil, kaolin. Proc. Int. Clay Conf., Bologna & Pavia, 711-718.Google Scholar