Table 2: Observed FT-IR absorption frequencies (cm-1) and relative intensities of ancient archaeological pottery fragments.

FT-IR absorption bands in wave numbers (cm-1) with relative intensities Tentative vibrational assignments
SH-01 SH-02 SH-03 KDR-01 UMR-01 UMR-02 UMR-03
3620 VW 3618 VW OH Stretching, Crystalline hydroxyl
3446 M 3450 M 3433 S 3415 VS 3436 M 3411 M 3402 W O-H str. of adsorbed water
1645 W 1641 W 1631 W 1629 VW 1633 M 1647 W 1627 VW Bending of water
1465 VW H-O-H stretching of adsorbed water
1041 VS 1041 VS 1081 VS 1080 VS 1018 VS 1033 VS 1035 VS Si-O Str. of clay minerals
786 M 788 M 779 W 777 W 775 W 777 VW 781 VW Si-O str. of clay minerals
797 796 VW Si-O of quartz
727 W 727 VW C-O str. Calcite
686 VW 688 VW 694 VW 694 VW 692 VW 696 VW Si-O bending of quartz
642 VW 646 VW Al-O-Si str. of feldspar
538 W 518 VW 538 VW Fe-O bend of Hematite
470 S 451 M 451 M 457 W 468 VW 460 W 468 W Si-O-Si bending of silicates

VS: Very strong; S: Strong; M: Medium; W: Week; VW: Very week.