Raman spectroscopic investigations of natural jennite

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Marco E. Ciriotti
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Raman spectroscopic investigations of natural jennite

Messaggio da Marco E. Ciriotti » mar 29 dic, 2015 17:36

Referenza:
▪ Müller, D., Hochleitner, R., Fehr, K.T. (2016): Raman spectroscopic investigations of natural jennite from Maroldsweisach, Bavaria, Germany. Journal of Raman Spectroscopy, 47, (in press).

Abstract:
A full-range pattern (100–3700 cm−1) analysis of natural jennite was performed for the first time by Raman spectroscopy, applying a polarized laser at a wavelength of 532 nm. A prominent structural feature of jennite is the preferred orientation of Si-tetrahedron and Ca-octahedron chains parallel [010]. The latter ones are additionally coupled to H2O molecules and OH groups. This arrangement leads to a strong dependence on orientation for the intensity ratios of mainly three different regions in the Raman spectra: 180–210, 950–1050 and 3100–3650 cm−1. These sections can be assigned to Ca–O lattice vibrations, Q2 Si–tetrahedron stretching and O–H vibrations of H2O molecules and Ca–OH structures, respectively.
Marco E. Ciriotti

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