Table 1: The wavenumbers and corresponding assignments of monetite.

IR monetite wavenumbers (cm−1)Assignments

2921C–H stretching [19]
2852
3461O–H stretching of residual free water [14]
902P–O(H) stretching [13, 19]
1064P–O stretching [14, 19]
1130
1637H–O–H bending and rotation of residual free water [14]
1400P–O–H in plane (bending) [14]
530O–P–O(H) bending mode [14]
583
1419Carbonate (from atmosphere) [15]