Research Article
Near-Infrared Spectroscopic Study of Chlorite Minerals
Table 3
Comparison of the infrared spectra used in this study with IR, IES (infrared emission spectra), and Raman spectra from other chlorite studies.
| IR (this study) | IR (Kloprogge and Frost [33]) | IES (Kloprogge and Frost [33]) | Raman (Prieto et al. [29, 30]) | Assignment |
| 432 | 435 | | 438 | (Fe,Mg)-O-Si bend | 472 | 459 | | 466 | ν3Si-O | 555 | 544 | 541 | 548 | Al-O-Si | 649 | 653 | 667 | 659 | ν2Si-O | 757 | 760 | 759 | 775 | (SiAl)O-OH bend | 850 | 818 | 802 | 814 | (AlAl)O-OH bend | 904 | 885 | 903 | OH bend | 956 | 943 | 925 | | Inner OH bend | 1030 | 1030 | 1034 | 1033 | Si-O stretch | 1060 | 1150 | 1086 | 1094 | Si-O stretch | 3423 | 3419 | 3450 | 3462 | (SiAl)O-OH stretch | 3554 | 3553 | 3560 | 3585 | (AlAl)O-OH stretch | 3662 | 3635 | 3645 | 3665 | Inner OH stretch |
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