Determination of the degree of Al, Si orderQodin kinetically disordered albite using hard mode infrared spectroscopy
✍ Scribed by E. Salje; B. Güttler; C. Ormerod
- Publisher
- Springer-Verlag
- Year
- 1989
- Tongue
- English
- Weight
- 560 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0342-1791
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✦ Synopsis
Hard Mode Infrared Spectroscopy (HMIS) is used to correlate the line shifts Am, the intensity changes AA and the variations of spectral line widths F of infrared absorption bands with the degree of A1, Si ordering, Qod, in kinetically disordered Na-feldspar.
A simple relationship
was found with the phonon band around 650 cm-1 being particularly sensitive to small changes of the degree of A1, Si ordering. It is shown that the average degree of A1, Si order can be determined from HMIS with an accuracy of ca. 8 percent using 50 mg of Na-feldspar. The experimental results agree well with recent X-ray determinations using identical samples. The significance of HMIS for the study of kinetic processes in minerals is explained.