Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
Clay Minerals Don't get GSW? Talk to your librarian.
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Clay Minerals; September 2002; v. 37; no. 3; p. 517-529; DOI: 10.1180/0009855023730050
© 2002 Mineralogical Society of Great Britain and Ireland
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Web of Science (7)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by LETAÏEF, S.
Right arrow Articles by RUIZ-HITZKY, E.
Right arrow Search for Related Content
GeoRef
Right arrow GeoRef Citation

Research Paper

Fe-rich smectites from Gafsa (Tunisia): characterization and pillaring behaviour

S. LETAÏEF1,2, B. CASAL2, N. KBIR-ARIGUIB3, M. TRABELSI-AYADI1 and E. RUIZ-HITZKY2,*

1 L.P.C.M. Faculté des Sciences de Bizerte, Zarzouna Bizerte, Tunisia, 2 Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, 28049 Madrid, Spain, and 3 Institut Nationale de la Recherche Scientifique et Technique, Borj-Cédria, 2050 Hammam-Lif, Tunisia

* E-mail: eduardo{at}icmm.csic.es

(Received 24 May 2001; revised 19 February 2002)

Three raw samples of Fe-rich smectites from Gafsa (Jebels Shemsi and Hammadi, Tunisia) have been characterized by different techniques which indicate that they contain (15–20%) illite, probably interstratified and to a lesser extent they also contain kaolinite, calcite, quartz and Fe oxides. These samples present a relatively high Fe content (~9%) in the <2 µm fraction. From EPR and Mössbauer spectroscopy it is deduced that Fe is mainly present as Fe(III) in the octahedral environment of smectites and also in Fe-oxyhydroxides associated with the clays. Aluminium-pillared clays have been prepared from the Na+-purified samples, and their thermal stability and acidity have been studied.

KEYWORDS: Fe-rich smectite, bentonite, pillared clays, EPR, Mössbauer, IR




This article has been cited by other articles:


Home page
 Clay MineralsHome page
Y. SEKI and K. YURDAKOC
Identification and characterization of Fe-rich smectites in the Camlica Region of western Turkey
Clay Minerals, June 1, 2007; 42(2): 153 - 160.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2009 by Mineralogical Society of Great Britain and Ireland