The Tongkuangyu porphyry copper deposit in the Zhongtiao Mountains, China, is tectonically located on the southern margin of the North China platform and on the northern margin of the Late Archean Zhongtiaoshan intracontinental rift basin. The deposit occurs in a copper-bearing formation of tuffaceous variegated sandshale-K-rich bimodal volcanic rocks of the Tongkuangyu Formation of the Late Archean Jiangxian Group, and the orebodies are localized in a transition portion between tuffaceous variegated sandshale and bimodal volcanic rocks. The host rocks consist mainly of metagranodiorite-porphyry, meta-quartz monzonite- The Tongkuangyu porphyry copper deposit in the Zhongtiao Mountains, China, is tectonically located on the southern margin of the North China platform and on the northern margin of the Late Archean Zhongtiaoshan intracontinental rift basin. The deposit occurs in a copper-bearing formation of tuffaceous variegated sandshale-K-rich bimodal volcanic rocks of the Tongkuangyu Formation of the Late Archean Jiangxian Group, and the orebodies are localized in a transition portion between tuffaceous variegated sandshale and bimodal volcanic rocks. The host rocks consist mainly of metagranodiorite-porphyry, meta-quartz monzonite-