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GEOREF RECORD

In-situ analysis of nitrogen in minerals

Abdel Majid Bastoul, Jacques Pironon, Michelle Mosbah, Michel Dubois and Michel Cuney
In-situ analysis of nitrogen in minerals
European Journal of Mineralogy (April 1993) 5 (2): 233-243

Abstract

Three microscopic techniques have been applied to the analysis in situ of N trapped as NH (super +) (sub 4) in muscovite, biotite and feldspar in schists from Jebilet (Morocco) and Cevennes (France). 1) Spectra obtained with FTIR show vibrational nu (sub 1) , nu (sub 2) , nu (sub 3) bands and some overtones and combinations of the ammonium molecule. The quantitative analysis is disturbed by dichroism effects and needs the use of silicate standards. The NH (super +) (sub 4) of the phyllosilicates is not detected by Raman microspectroscopy. 2) The nuclear microprobe was applied to the same mineral separation and N content was measured using the (super 14) N(d,alpha (sub o) ) (super 12) C and (super 14) N(d,rho (sub o) ) (super 15) N reactions with a deuteron energy of 1.8 MeV. TiN is used for calibration; concentrations of 360-2200 ppm were obtained. 3) The ion microprobe was found to be more sensitive to matrix effects. The isotopic composition could not be obtained due to the low (super 15) N content of the minerals (near 1-10 ppm); the detection limit is 10-100 ppm.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 5
Serial Issue: 2
Title: In-situ analysis of nitrogen in minerals
Affiliation: CREGU, Vandoeuvre-les-Nancy, France
Pages: 233-243
Published: 199304
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 54
Accession Number: 1993-010394
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: 2 tables
Secondary Affiliation: Universite de Marrakech, MAR, Morocco(CEA-CNRS)-CE/SACLAY, FRA, FranceCRPG-CNRS, FRA, France
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 1993
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