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Chemical and mineralogical characterization of a Cretaceous clay from the Lousã Basin (Central Portugal)

Published online by Cambridge University Press:  09 July 2018

M. I. Prudêncio ,
J. C. Waerenborgh  and
J. M. P. Cabral
M. I. Prudêncio
Affiliation:
Departamento de Quimica, ICEN, LNETI, 2685 Sacavém Portugal
J. C. Waerenborgh
Affiliation:
Departamento de Quimica, ICEN, LNETI, 2685 Sacavém Portugal
J. M. P. Cabral
Affiliation:
Departamento de Quimica, ICEN, LNETI, 2685 Sacavém Portugal
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Abstract

Samples of two lenticular clay bodies from a Cretaceous deposit near Padrão (Lousã basin) were characterized by INAA, XRD and Mössbauer spectroscopy. This clay is believed to be the raw material used to manufacture the Iron Age and Roman fine grey pottery from Conímbriga. The differences observed in the chemical and mineralogical compositions of the clay samples and of different size fractions are consistent with the high variance found in the compositional group corresponding to that archaeological site.

Type
Research Article
Information
Clay Minerals , Volume 23 , Issue 4 , December 1988 , pp. 411 - 422
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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