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First evidence of synthetic polygonal serpentines

Bertrand Devouard, Alain Baronnet, Gustaaf van Tendeloo and Severin Amelinckx
First evidence of synthetic polygonal serpentines
European Journal of Mineralogy (June 1997) 9 (3): 539-546


Hydrothermal syntheses on the stoichiometric composition 3MgO2SiO (sub 2) plus excess H (sub 2) O can reproduce the various rolled structures of natural serpentines, but synthetic polygonal serpentine has not hitherto been reported, probably due to difficulties in TEM sample preparation. An embedding preparation technique followed by ion milling is described, which allows HRTEM axial imaging of synthetic serpentine fibres; selected-area electron diffraction (SAED) patterns of single fibres can also be recorded. Like their natural counterparts, synthetic fibres with a diameter >><$I> 100 nm unambiguously display polygonal arrangements of 150 and 30-sector types, and various stacking sequences including regular multi-layer polytypes. These results indicate that the origin of polygonization is probably controlled by T and/or growth (kinetic) parameters.

ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 9
Serial Issue: 3
Title: First evidence of synthetic polygonal serpentines
Affiliation: CRMC2-CNRS, Marseilles, France
Pages: 539-546
Published: 199706
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 18
Accession Number: 1997-042909
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Secondary Affiliation: RUCA-EMAT, Antwerp, BEL, Belgium
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199715
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