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Absorption coefficients of overtone and combination modes of quartz

Published online by Cambridge University Press:  05 July 2018

Keiji Shinoda  and
Nobuyuki Aikawa
Keiji Shinoda
Affiliation:
Department of Geosciences, Faculty of Science, Osaka City University, Sugimoto 3-3-138, Sumiyoshi, Osaka 558, Japan
Nobuyuki Aikawa
Affiliation:
Department of Geosciences, Faculty of Science, Osaka City University, Sugimoto 3-3-138, Sumiyoshi, Osaka 558, Japan
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Abstract

The a-, σ- and π-spectra of quartz in the IR regions were measured under FTIR spectroscopy, and overtone and combination modes perpendicular to the c-axis of quartz were confirmed to be electric vector active by the coincidence of the a-spectrum with the σ-spectrum among the three kinds of spectra. Absorption coefficients of overtone and combination modes intrinsic to the a- σ-, and п-spectra of quartz were measured. The thickness of quartz thin sections can be determined by applying the absorption coefficients obtained from the α- and σ-spectra to the polarized IR absorption spectra measured under E ⊥ the c-axis.

Keywords

polarized absorbance spectrumabsorption coefficientthickness determinationquartz
Type
Mineralogy
Information
Mineralogical Magazine , Volume 58 , Issue 393 , December 1994 , pp. 601 - 606
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1994

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