The Raman spectrum of wollastonite (see above spectrum) is dominated by a strong fluorescence and the peaks are very weak and only a few can be distinguished clearly. The Si-O_nbr stretching modes are observed at 887 cm^-1, 968 cm^-1, 1042 cm^-1, 1097 cm^-1 and 1133 cm^-1. For Si-O_br, the band at 635 cm^-1 is assigned, and for the bending mode of Si-O – the 581 cm^-1 band. The 338 cm^-1, 412 cm^-1 and 502 cm^-1 bands are attributed to Ca-O bending and stretching modes (see below table). Huang et al. (2000) had reported more Raman bands for wollastonite. All bands of wollastonite are different from pyroxene spectra.

• The Mineralogy Database [link]

• Crystal data (.cif file) from the American Mineralogist Crystal Structure Database [link]

• ¹BUZATU A., BUZGAR N. (2010) - The Raman study of single-chain silicates. Anal. Şt. Univ. “Al. I. Cuza” Iaşi, Geologie, LVI/1. [link]

• Huang, E., Chen, C.H., Huang, T., Lin, E.H., Xu, J., (2000) - Raman spectroscopic characteristics of Mg-Fe-Ca pyroxenes. American Mineralogist, 85, 473–479.