Raman spectroscopic investigations of natural jennite

database, nuove specie, discrediti,
ridefinizioni, classificazioni, ecc.
Avatar utente
Marco E. Ciriotti
Messaggi: 25104
Iscritto il: ven 25 giu, 2004 11:31
Località: via San Pietro, 55 I-10073 Devesi/Cirié TO - Italy

Raman spectroscopic investigations of natural jennite

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

▪ 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).

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

«Things are interesting only in so far as they relate themselves to other things»


Chi c’è in linea

Visitano il forum: Nessuno e 3 ospiti