Abstract: The Sankuanggou Au-bearing Fe-Cu deposit in Nenjiang County, Heilongjiang Province, belonging to typical skarn type, occurs in the exocontact of the Variscan granite intrusive. The skarnization and hydrothermal sulfide mineralization formed numerous chalcopyrite, auriferous chalcopyrite and magnetite ore bodies. The ore minerals are mainly chalcopyrite, bornite, magnetite and electrum, accompanied by the useful components of Se, Te, Ga and In. The Sankuanggou granite body, fracture and contact zone, and the stratum of Duobaoshan formation control the forming of the deposit. The exploration for the same type of deposits in Sankuanggou-Duobaoshan area is promising.