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Coexistence of halloysite and kaolinite: a study on the genesis of kaolin clays of Campo Alegre Basin, Santa Catarina State, Brazil

De Oliveira, Marisa T G; Furtado, Sandra M A; Formoso, Milton L L; Eggleton, Richard A; Norberto, Dani


Kaolin at Campo Alegre Basin, Santa Catarina State, Brazilwas formed from alteration of volcanic acid rocks. Halloysite clays dominate the clay fraction of the matrix of the kaolin body, whereas a poorly crystalline kaolinite is abundant in veins. Some primary blocky structures have high amounts of illite, in one mine, but in general, only low contents of illite-smectite, illite, chlorite-vermiculite, vermiculite and quartz were identified in the clay fraction of the samples. Toward the top...[Show more]

CollectionsANU Research Publications
Date published: 2007
Type: Journal article
Source: Anais da Academia Brasileira de Ciencias
DOI: 10.1590/S0001-37652007000400008


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