School of ��esources and Environment Engineering��Hefei University of Technology��Hefei 230009��China

To determine the ore genesis of the Erpengdianzi copper-zinc deposit in Huanren area of Liaoning�� geologic and geochemical characteristics and ore-forming material source have been studied�� The results showed that major skarn orebodies in this deposit occurred in stratified and irregular types�� The stratified skarn were concordant with their wall-rock��and in layered or layered-like shapes�� The ore-hosting skarn and the limestone in Cambrian Xuzhuang Formation had similar ��EE composition and distribution patterns�� In addition��the contents of ore-forming elements of Cu��Pb and Zn in the limestone from the Xuzhuang Formation were obviously higher than their Clarke value and similar rocks in this region�� These data mentioned above��together with the data of C��S and Pb isotopes��indicated that the Erpiengdianzi deposit had stratabound characteristics��and the ore-forming materials mainly came from the sedimentary strata in the Xuzhuang Formation�� The irregular skarn was formed by the contact metasomatic mineralization associated with Yanshanian diorite��which superimposed and reformed the early stage��