| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1229025 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy | 2015 | 6 Pages |
•Near-infrared spectroscopy was used to study the structure of chloritoid.•The crystal structure of chloritoid was proposed.•There is not exist water in the chloritoid crystal structure.•There are two different octahedral layers in the structure of chloritoid.
The mineral chloritoid collected from the argillite in the bottom of Yaopo Formation of Western Beijing was characterized by mid-infrared (MIR) and near-infrared (NIR) spectroscopy. The MIR spectra showed all fundamental vibrations including the hydroxyl units, basic aluminosilicate framework and the influence of iron on the chloritoid structure. The NIR spectrum of the chloritoid showed combination (ν + δ)OH bands with the fundamental stretching (ν) and bending (δ) vibrations. Based on the chemical component data and the analysis result from the MIR and NIR spectra, the crystal structure of chloritoid from western hills of Beijing, China, can be illustrated. Therefore, the application of the technique across the entire infrared region is expected to become more routine and extend its usefulness, and the reproducibility of measurement and richness of qualitative information should be simultaneously considered for proper selection of a spectroscopic method for the unit cell structural analysis.
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