Cover Story：Dense disseminated bornite in wollastonite skarn ore. It is the product of Miocene porphyry-skarn metallogenic system in the Jiama copper polymetallic deposit, Tibet. Studies show that the Jiama copper polymetallic deposit is a rare Cu-Mo-Pb-Zn(-Au-Ag) polymetallic deposit occur-ring in skarn and hornfels. Its bornite accounts for more than 50% of the copper-bearing minerals, which is extremely rare in the porphyry metal-logenic system. This research has proved the possibility of the formation of skarn- type supper large ore deposit in the Gangdise metallogenic belt of Tibet through reexamining the features of the traditional skarn-type ore deposits. The research achievement directed by Professor TANG Ju-xing, Institute of Mineral Resources, Chinese Academy of Geological Sciences, ranks “Top Ten Scientific and Technological Progresses of CAGS in 2009”. For details, see pp.495-506. (photo by TANG Ju-xing)
