Micro-Raman spectra of ugrandite garnet.
The natural garnets from chromite ores associated with pegmatoid pyroxenites of Sangalyk area (Uchaly ore district, southern Urals, Russia) were studied by means of micro-Raman spectroscopy. The compositions of these garnets were close to ugrandite, an isomorphous intermediate group of uvarovite-grossularite-andradite, X(3)Y(2)(SiO(4))(3), X = Ca(2+), Y = Al(3+), Fe(3+), Cr(3+), according to Raman spectra and X-ray microprobe analyses. An assignment of most of the observed bands in visible and near infrared Raman spectra is reported.
Moroz
T
T
Institute of geology and mineralogy, Siberian Branch of Russian Academy of Science, Pr. Akad. Koptyuga, 3, 630090 Novosibirs, Russia. moroz@uiggm.nsc.ru
Ragozin
A
A
Salikhov
D
D
Belikova
G
G
Puchkov
V
V
Kagi
H
H
D019015:Geologic Sediments / Q000737:chemistry*; D008903:Minerals / Q000032:analysis* / Q000737:chemistry; D013059:Spectrum Analysis, Raman
D008903:Minerals