ARGIN: 0cm 0cm 0pt" class=MsoNormal>an’,’serif’" lang=EN-US>The Jiama copper-polymetallic ore deposit is a super large ore deposit in the central Gangdise. The petrologic, petrochemical, rare earth and trace element characteristics of the skarn are studied in this paper. The geochemical characteristics of the skarn are restricted by that of marbles and affected by that of granites. It indicates that the skarn has something to do with marbles and granites. The lithologic interface between hornfels and marbles, a expanding space formed by the nappe and detachment movement, is a key factor for the large-scale distribution of the large skarn-type copper-polymetallic ore bodies. It is concluded that the Jiama deposit is not a submarine exhalation-sedimentation type but a magmatic hydrothermal contact metasomatic type ore deposit.amespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />