Micro-FTIR and EPMA Characterisation of Charoite from Murun Massif (Russia)

Table 1

Band position (cm⁻¹) and assignment for the bands in the infrared spectrum of the studied (see Figures 1 and 3) and literature charoite.

This study	Infrared data [6]	Raman data [5]	Band assignment
4440, 4079			—
3530, 3453, 3385, 3285, 3150	3610, 3550, 3500, 3410		OH and H2O stretching
3036, 2965, 2922, 2870, 2849			C-H vibration
		2403, 2367	N-H vibration
2077, 2005, 1948, 1841			Combination of Si-O modes
1667, 1595	1650, 1620, 1590		H2O bending
1508, 1458			C-H vibration
1185, 816, 759, 577		1135, 116, 1054, 675, 638, 434, 242	Si-O and M-O stretching/bending