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(super 19) F MAS-NMR study of structural fluorine in some natural and synthetic 2:1 layer silicates

Laurent Huve, Luc Delmotte, Pascal Martin, Ronan Le Dred, Jacques Baron and Daniel Saehr
(super 19) F MAS-NMR study of structural fluorine in some natural and synthetic 2:1 layer silicates
Clays and Clay Minerals (April 1992) 40 (2): 186-191

Abstract

High-resolution solid-state, fluorine-19, magic-angle spinning-nuclear magnetic resonance spectroscopy (MAS-NMR) was used to study natural and synthetic fluorinated 2:1 layer silicates of known composition. This technique enabled us to determine directly the coordination of structural fluorine and it was found to be sensitive to both the chemical nature of the octahedral elements (Al, Mg, Li) and the type of octahedral sheet (di- or trioctahedral). The observed chemical shifts at -132, -152, -176 and -182 ppm (relative to CFCl (sub 3) ) were assigned to different environments of fluorine. The results were then used to characterize synthetic 2:1 layer silicates with unknown octahedral composition.


ISSN: 0009-8604
Coden: CLCMAB
Serial Title: Clays and Clay Minerals
Serial Volume: 40
Serial Issue: 2
Title: (super 19) F MAS-NMR study of structural fluorine in some natural and synthetic 2:1 layer silicates
Affiliation: URA-CNRS, Lab. Mater. Miner., Mulhouse, France
Pages: 186-191
Published: 199204
Text Language: English
Publisher: Clay Minerals Society, Clarkson, NY, United States
References: 25
Accession Number: 1992-024674
Categories: Sedimentary petrologyGeneral geochemistry
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 2 tables, charts
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, Copyright, Mineralogical Society of Great Britain and Ireland
Update Code: 1992
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