FTIR micro-reflectance measurements of the CO32 ion content in basanite and leucitite glasses

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doi: 10.1007/s004100050224
Authors:Grzechnik, A.; Zimmermann, H. D.; Hervig, R. L.; King, P. L.; McMillan, P. F.
Author Affiliations:Primary:
Arizona State University, Tempe, AZ, United States
Other:
Arhus University, Denmark
Volume Title:Contributions to Mineralogy and Petrology
Source:Contributions to Mineralogy and Petrology, 125(4), p.311-318. Publisher: Springer International, Heidelberg-New York, International. ISSN: 0010-7999
Publication Date:1996
Note:In English. 18 refs.; 2 tables
Summary:IR spectroscopy provides a reliable method for rapid, non-destructive quantitative analysis of volatile species in silicate glasses. The methodology has been developed using a series of basanite and leucitite glasses with high carbonate contents, which could not easily be analysed by IR transmission. SIMS was used to standardize the technique. Two features observed in the reflectance spectra near 1400 and 1500 cm-1 are due to resonance of the IR beam with the asymmetric stretching vibrations of carbonate groups. The contribution of these species to the total reflectivity is directly correlated with the C abundance in the samples, thus forming the basis for an empirical quantitative analysis. The optical constants, including the IR absorption coefficients associated with the CO 2- 3 stretching vibrations, have been determined. The molar extinction coefficients are 1119 ± 138 and 1198 ± 145 litre/mol/cm for the 1400 and 1500 cm-1 bands, respectively, in excellent agreement with results of previous transmission studies, after orientation effects have been considered. [R.E.S.]
Subjects:Basanite; Carbonate ion; Geochemistry; Glasses; Igneous rocks; Leucitite; Reflectance; Silicates; Volatiles; Volcanic rocks
Abstract Numbers:97M/3502
Record ID:1997042384
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
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