Cation Disorder in Columbite-Group Minerals by FTIR Analysis
Abstract
Columbite-group minerals are economically important oxide minerals that form in granitic pegmatites. Past studies have quantified cation disorder in these minerals using XRD data and focusing on lattice dimensions. This previous work has also shown a correlation between cation disorder and transmittance spectra from Fourier Transform Infrared Spectroscopy. Using FTIR we studied a suite of columbite-group mineral samples from the Yellowknife pegmatite field. Both ATR and KBr methods were implemented in order to better quantify cation disorder. Potential for interstitial hydrous phases was also investigated.
- Publication:
-
AGU Spring Meeting Abstracts
- Pub Date:
- May 2009
- Bibcode:
- 2009AGUSMMA71B..02R
- Keywords:
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- 3620 Mineral and crystal chemistry (1042);
- 3630 Experimental mineralogy and petrology;
- 3665 Mineral occurrences and deposits;
- 3934 Optical;
- infrared;
- and Raman spectroscopy