(a)
(b)
(c)
(d)
(e)
(f)
Figure 9: Representative Raman spectra of fluid inclusions in the Liyuan gold deposit. (a) CO2 spectra of vapour in PC-type inclusions of the early stage; (b) H2O and CO2 spectra of vapour in C-type inclusions of the early stage; (c) CO2 and CH4 spectra of vapour in PC-type inclusions of the middle stage; (d) CO2 and CH4 spectra of vapour in C-type inclusions of the middle stage; (e) CO2 and H2O spectra of vapour in C-type inclusions of the middle stage; (f) H2O spectra of vapour in W-type inclusions of the middle stage.