title: [Vibrational spectra of Hetian nephrite from Xinjiang].
abstract: In previous studies, EMPA, PIXE and others were employed to study the chemical compositions of nephrite separately without a systematical measurement. In the present study, XRF, XRD, IR and LR were used together to examine chemical and spectra characteristics of white, green and black nephrite from Hetian, Xinjiang. XRD results indicate that all nephrite samples consist of tremolite. Then IR spectra of nephrite samples suggest that the M-OH stretching vibration bands show that the M1 and M3 sites are not only occupied by Mg2+ and Fe2+, but also by Fe3+, which is consistent with the chemical compositions of these samples. This information might be useful to understanding the variety of nephrite. Their Raman spectra are almost the same, while some differences exist because of different content of FeO/Fe2O3.
authors.affiliation: State Key Laboratory for Petroleum Resource and Prospecting, Basin & Reservoir Research Center, Chinese University of Petroleum, Beijing 102249, China. zyw75@126.com
authors.forename: Yong-wang
authors.initials: YW
authors.lastname: Zhang
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Tao-tao
authors.initials: TT
authors.lastname: Liu
authors.forename: Zari
authors.initials: Z
authors.lastname: Muhetaer
authors.forename: Yuan-qing
authors.initials: YQ
authors.lastname: Liu