Alteration of the Callovo-Oxfordian clay from Meuse-Haute Marne underground laboratory (France) by alkaline solution; I, A XRD and CEC study

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doi: 10.1016/j.apgeochem.2004.03.009
Authors:Ramírez, Susana; Vieillard, P.; Bouchet, A.; Cassagnabère, A.; Meunier, A.; Jacquot, E.
Author Affiliations:Primary:
Université de Poitiers, Bâtiment de Géologie, Poitiers, France
Other:
Société ERM, France
ANDRA, France
Volume Title:Applied Geochemistry
Source:Applied Geochemistry, 20(1), p.89-99. Publisher: Pergamon, Oxford-New York-Beijing, International. ISSN: 0883-2927
Publication Date:2005
Note:In English. 16 refs.; illus., incl. 3 tables
Summary:The reaction of the clay fraction of the Callovo-Oxfordian hard shale formation hosting the French underground laboratory site, with high pH NaOH, KOH and Ca(OH)2 solutions has been investigated through closed system experiments at 60, 90 and 120 °C over 6, 24 and 168 h. The mineralogical composition of the run samples has been determined using X-ray diffraction (XRD) of randomly oriented powders showing the formation of different species of zeolites (analcime, chabazite, phillipsite) and Ca silicates (tobermorite, katoite). The phyllosilicates were studied using XRD of oriented preparations and cation exchange capacity measurements. Detrital or diagenetic mica and chlorite in the <2 µm fraction remain unchanged. On the contrary, the smectite and random illite-smectite mixed layer minerals are strongly reactive. The expandable layers of montmorillonite type are selectively dissolved while beidellitic ones survive or are transitionally formed. Abstract Copyright (2005) Elsevier, B.V.
Sections:Clay minerals; Experimental mineralogy
Subsections:Techniques; structure; properties
Mineral Groups:Sheet silicates
Subjects:Alkalic composition; Alteration; Basins; Bedrock; Callovian; Cation exchange capacity; Chemical composition; Clastic rocks; Clastic sediments; Clay; Clay minerals; Framework silicates; Geochemistry; Jurassic; Laboratory studies; Mesozoic; Middle Jurassic; Mineral assemblages; Mineral composition; Oxfordian; PH; Reactivity; Sedimentary basins; Sedimentary rocks; Sediments; Shale; Sheet silicates; Silicates; Smectite; Solutes; Underground installations; Upper Jurassic; X-ray diffraction data; Zeolite group; Europe; France; Haute-Marne France; Meuse France; Paris Basin; Western Europe
Coordinates:N482500 N493500 E0055200 E0045000
N473500 N484000 E0055200 E0043500
Abstract Numbers:05M/485
Record ID:2005062124
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from CAPCAS, Elsevier Scientific Publishers, Amsterdam, Netherlands
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