Abstract:

J&L Au Polymetallic deposit situates at an important regional SEDEX and VMS type Pb-Zn polymetallic metallogenic belt.After several stage of exploration，it’s gold resources already reached a large sized level，Pb-Zn and Ag all reached a medium sized level.But according to the genetic type has been controversial for a long time，and the research about the ore control factors is not enough，exploration direction is undefined .In a big exploration campaign of J&L in 2010，the different mineralization episodes was indentified and the mineralization genetic type was defined through detailed observation on drilling cores and underground，combining with a numerous of  sample results from muti-elements analysis and 3D modeling for J&L.Based on a clear understanding about J&L，a new exploration campaign was arranged，subsequently lead to a very good exploration result.Two mineralization zones（Yellow jacket and Main zone） had been identified and controlled，the space between two zones from north to south is only 30 m，but the two zones show a distinct different mineralization type.This research consider：Yellow jacket zone is a stratabound IRISH Pb-Zn deposit hosted by carbonate；Main zone is a orogenic Au-Ag-Pb-Zn polymetallic deposit hosted by shear zone，which overprinted on a stratabound Pb-Zn mineralization in orogenic period.

Key words: Mineralizing process, Genetic type, Ore-controlling factor, Prospecting direction, Orogenic gold deposit, IRISH Pb-Zn deposit