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X-ray photoelectron spectroscopy (XPS) used as a structural and chemical surface probe on aluminosilicate minerals

Giuseppe G. Biino and Pierangelo Groening
X-ray photoelectron spectroscopy (XPS) used as a structural and chemical surface probe on aluminosilicate minerals
European Journal of Mineralogy (June 1998) 10 (3): 423-437

Abstract

The XPS spectra of single crystals of andalusite, kyanite, pyrope and K-feldspar, and pressed powder pellets of andalusite and pyrope, have been investigated. XPS yields accurate and reproducible chemical information on the near surface of these minerals. For kyanite, although the chemical composition is close to being stoichiometric, the composition of a cleaved kyanite surface is richer in Si. The chemical environments for the major components in aluminosilicate minerals exhibit a photoelectron chemical shift that is accurately measurable. Substitution of Si by Al in the tetrahedral site is only evident in one peak (the Ols peak). This peak can be split into its main components: Al-O-Si, Si-O-Si, non-bridged oxygen and adventitious material. However, the fitting of the Ols photopeaks suggests that the surface chemical oxygen bonding requirements cannot be directly compared to the bulk material, and other techniques are necessary.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 10
Serial Issue: 3
Title: X-ray photoelectron spectroscopy (XPS) used as a structural and chemical surface probe on aluminosilicate minerals
Affiliation: University of Fribourg, Institute of Mineralogy and Petrography, Perolles, Switzerland
Pages: 423-437
Published: 199806
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
Accession Number: 1998-046901
Categories: Mineralogy of silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199818
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