Spatial Distribution of Siderophile Elements and Genesis of The Jinchuan Ni-Cu-(PGE) Sulfide Deposit

摘要

The Jinchuan intrusion hosts the largest single magmatic Ni deposit in the world.It is characterized by small olivine-rich ultramafic intrusion in Longshoushan terrane in the southwestern part of the North China Craton.Olivine in the intrusion has been variably converted to mixtures of serpentine and fine-grained magnetite.Interstitial pyroxene and minor plagioclase have been altered to mixtures of chlorite,amphibole,epidote,etc.Pyrrhotite,pentlandite,and chalcopyrite are the main interstitial sulfide minerals surrounding olivine grains forming net-textured and disseminated sulfide ores.