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NMR spectra of moganite and chalcedony

Heribert Graetsch, Ivana Topalovic and Hermann Gies
NMR spectra of moganite and chalcedony
European Journal of Mineralogy (August 1994) 6 (4): 459-464


(super 29) Si MAS NMR, (super 29) Si (super 1) H CP [cross polarization] MAS NMR and (super 1) H MAS NMR spectra of the water-containing microcrystalline silica varieties chalcedony, moganite and three intermediate samples are reported. The (super 29) Si MAS NMR spectra give evidence that, unlike quartz, the Si atoms occupy two symmetrically different sites in moganite. The (super 1) H MAS NMR spectra show signals of molecular water and four different species of silanol groups.

ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 6
Serial Issue: 4
Title: NMR spectra of moganite and chalcedony
Affiliation: Ruhr-Universitat Bochum, Institut fur Mineralogie, Bochum, Federal Republic of Germany
Pages: 459-464
Published: 199408
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 17
Accession Number: 1995-001804
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 1 table
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199501
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