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Ammonium illite from anchimetamorphic shales associated with anthracite in the Zemplinicum of the western Carpathians

Published online by Cambridge University Press:  09 July 2018

V. Šucha ,
I. Kraus  and
J. Madejová
V. Šucha
Affiliation:
Department of Geology of Mineral Deposits, Comenius University, Mlynská dolina G, 842 15 Bratislava, Slovakia
I. Kraus
Affiliation:
Department of Geology of Mineral Deposits, Comenius University, Mlynská dolina G, 842 15 Bratislava, Slovakia
J. Madejová
Affiliation:
Department of Geology of Mineral Deposits, Comenius University, Mlynská dolina G, 842 15 Bratislava, Slovakia Institute of Inorganic Chemistry, Slovak Academy of Science, Dúbravská cesta 9, Bratislava, Slovakia
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Abstract

Ammonium-rich illite was identified in shales from the meta-anthracite coalfields of Zemplinicum (the Western Carpathians) together with K-illite and Na-illite using X-ray diffraction (XRD), infrared absorption and chemical analyses. The NH4-abundance in illite was quantified by the position of the 005 XRD reflection and by chemical analysis. Ammonium-bearing illite was probably formed in the temperature interval 200-270°C by illitization of a kaolinite precursor in the presence of ammonium.

Type
Research Article
Information
Clay Minerals , Volume 29 , Issue 3 , September 1994 , pp. 369 - 377
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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