GENETIC CONNECTION BETWEEN THE LEAD-ZINC AND GOLD-SILVER DEPOSITS IN THE QINGCHENGZI ORE CONCENTRATION AREA IN EASTERN LIAONING

The Qingchengzi ore concentration area in Eastern Liaoning Province, consisting of the Qingchengzi lead-zinc deposit and the gold-silver deposits in periphery, is an important site for lead, zinc, gold and silver resources in North China. The distribution of the deposits is strictly controlled by the ore formations. The lead-zinc deposits occur mainly in the middle and lower parts of the third member of Dashiqiao formation, Liaohe Group. While the gold-silver deposits are hosted by the upper part of the third member of Dashiqiao formation and lower Gaixian formation. In regard to the mineralizing periods, the lead-zinc deposits were mostly formed in Paleoproterozoic to Mesozoic eras, genetically belonging to sedimentary metamorphic-magmatic hydrothermal reformation type. The forming of the gold-silver deposits was control by Mesozoic magmatism and tectonics. It is concluded that the lead-zinc deposits and the peripheral gold-silver deposit are associated with each other, in a certain genetic correlation.