Character of the Citronen Fjord Lead-Zinc Deposit，North Greenland

The Citronen Fjord lead-zinc deposit, in reserve expansion and feasibility study stage by now, is a world-class protogenesis lead-zinc deposit. It is also known as the most northern lead-zinc deposit in the world. Both folds and thrust faults are well developed in the Citronen Fjord area and the lead-zinc ore de- posit is generally a NW-SE striking trend，mineralization zone is mainly located in Discovery Zone, Beach Zone and Esrum Zone. The ore body is hosted by Upper Ordovician-Lower Silurian mudstone and shale, and the main sulphides include pyrite, sphalerite and galena. The δS values of sulphide minerals from the Citronen Fjord ore deposit range from + 7% to + 35%(CDT)，with the bulk of analyses in the range from + 10 % to + 25 %， while the lead isotope has radiogenic characteristic. The ore-forming fluid tem- perature are in epithermal, ranging from 80℃ to 160℃. The Citronen Fjord lead-zinc deposit is genetically a SEDEX deposit. Lead-zinc resources are abundant in Greenland,and in particular,abundant in the Pa- laeozoic Franklinian Basin of North Greenland which extends for more than 2,500 km E-W. This under-ex- plored basin is believed to be an excellent target area for lead-zinc exploration in future.