Raman spectroscopy of smithsonite

Publication

Reference: Frost Ray L., Hales Matt C., Wain Daria L. (2008). Raman spectroscopy of smithsonite. J. Raman Spectrosc., 39, 108 - 114.

Names

Title: Raman spectroscopy of smithsonite
Abstract: Raman spectroscopy at both 298 and 77 K has been used to study a series of selected natural smithsonites from different origins. An intense sharp band at 1092 cm$^-1$ is assigned to the $CO_3^{2−}$ symmetric stretching vibration. Impurities of hydrozincite are identified by a band around 1060 cm$^-1$. An additional band at 1088 cm$^-1$ which is observed in the 298 K spectra but not in the 77 K spectra is attributed to a $CO_3^{2−}$ hot band. Raman spectra of smithsonite show a single band in the 1405–1409 cm$^-1$ range assigned to the $\nu_3$ $(CO_3)^{2−}$ antisymmetric stretching mode. The observation of additional bands for the $\nu_3^g$ modes for some smithsonites is significant in that it shows distortion of the ZnO6 octahedron. No $\nu_2$ bending modes are observed for smithsonite. A single band at 730 cm$^-1$ is assigned to the $\nu_4$ in phase bending mode.Multiple bands be attributed to the structural distortion are observed for the carbonate $\nu_4$ in phase bending modes in the Raman spectrum of hydrozincite with bands at 733, 707 and 636 cm$^-1$. An intense band at 304 cm$^-1$ is attributed to the ZnO symmetric stretching vibration.
Keywords: Raman spectroscopy, band position, low temperature, minerals, carbonates, smithsonite, ZnCO3, hydrozincite, Zn5(CO3)2(OH)6
Content: band list data, spectral data, experimental physics

Doi

10.1002/jrs.1835

Identifiers