Abstract: This paper presents a new study of the complete Cu-S minerals from the Zijinshan Cu-Au deposit, based on electron- microprobe and X-ray diffraction analyses. All copper sulfide minerals present in the Cu-S series were identified here, including covellite, yarrowite, spionkopite, geerite, anilite, digenite, djurleite, and chalcocite. The cell parameters of covellite, anilite, digenite, djurleite, and chalcocite were calculated using the X-ray diffraction data. The sequence of crystallization and phase variations of the Cu-S minerals exposed in this deposit are established according to their systemic mineralogical study for the first time in China. This study also contributes to enrich the materials of mineralogical study of Cu-S series minerals.

Key words: Cu-S Minerals, Electron-microprobe analysis, X-ray diffraction, Zijinshan Cu-Au deposit