An Assessment of Fluid Inclusions Composition Using the Raman Spectroscopy at Daleishan Goldfield, Dawu County, Hubei Province, P.R. China.

The purpose was to assess fluid inclusions composition in the Goldfield, Hubei province, China. The laser Raman spectroscopy was used as an analytical tool. The results show that water and carbon dioxide (�70 %), and quartz (�10 %) are the primary and secondary compositions of most of the inclusions, respectively. A number of three phase inclusions were low and inclusion size varies from 1 to 27µm. The density of CO2 fluid inclusions measured in quartz mineral varied from 0.61 to 0.96 g/cm3. No traces of other gases such as hydrogen (H2), ethylene (C2H2), ethene (C2H4), benzene (C6H6), hydrogen sulphide (H2S) and carbon monoxide (CO) were observed, confirming epithermal origin of the deposit (quartz ± calcite± adularia ± illite assemblage). In Daleishan goldfield, according to inclusion composition, vapor and liquid may be main agent transports for gold in epithermal systems as well as for silver. (Nature and Science 2010;8(6):16-22). (ISSN: 1545-0740).