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Kernmagnetische resonanzmessungen an Glaukoniten

Published online by Cambridge University Press:  09 July 2018

Ewald E. Kohler
Affiliation:
Lehrstuhl für Mineralogie der TU Miinchen
P.K. Burkert
Affiliation:
Anorganisch-chemisches Laboratorium der TU Miinchen 8000 München 2, Arcisstr 21, Deutschland

Zusammenfassung

Bei der Untersuchung von 6 Glaukonitproben mit Hilfe der ‘H-Kernresonanz-Spektroskopie zeigen sich deutlich zwei verschieden gebundene OH-Gruppierungen. Wàhrend die relativ scharfen Signale A auf die in der Oktaederschicht flxierten zwei OH-Gruppen zuriickzufuhren sind, muB fiir die anderen OH-Gruppen des breiteren Signals B eine andere Bindungsnatur gefordert werden. Es ist móglich, dafl es sich bei den OH-Gruppen des Signals B ebenfalls um verschieden gebundene OH-Gruppen handelt und zwar um solche, die an Eisenhydroxid- Verunreinigungen gebunden sind und solche, die zwischenschichtlich in Form von Eisen-Hydroxo-Komplexen gebunden sind. Eine Unterscheidung zwischen letzteren beiden Mòglichkeiten ist aber nicht mòglich.

Abstract

Abstract

Examination of six glauconite samples by means of 1H-NMRspectroscopy shows two different kinds of OH-groups. One signal A is caused by OH-groups of the octahedral sheet. Another signal B must derive by bonds of other nature. It is possible that signal B represents OH-bonds of impurities as well as from interlayered hydroxy iron complexes. A more precise dissolution of signal B is not possible.

Abrege

Abrege

L'examen de six échantillons de glauconie au moyen de la spectroscopic 1H-NMR-révèle deux types différents de groupes OH. Un signal A provient de groupes OH de la feuille octaédrique. Un autre signal B doit dériver de liens d'autre nature. II est possible que le signal B représente des liens OH d'impuretés ainsi que de complexes de fer hydroxile en couches intermédiaires. Une dissolution plus précise du signal B est impossible.

Referata

Referata

El examen de seis muestras de glauconitas mediante espectroscopia de resonancia magnètica nuclear H1, muestra dos clases distintas de grupos OH. Una serial A es causada por grupos OH de la làmina octaédrica. Otra senal B debe derivarse por enlaces de otra naturaleza. Es posible que la serial B represente enlaces OH de impurezas asi corno de complejos de Fé hidroxi interestratificados. No es posible obtener una disolución mas precisa de la serial B.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1976

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