Abstract:The Jijiawa gold deposit, located in the western part of the Xiong’ershan gold polymetallic ore district, Henan Province, is typical of tectonically altered rock quartz vein type gold deposit. Orebodies are hosted mainly within nearly NS trending fault zone and are distributed in the form of “Y” shape. Mineralization is dominated by veinveinlet and disseminated pyritized altered rock gold deposits, with minor being quartz vein type gold deposits. The hydrothermal ore forming process can be divided into four stages: pyrite quartz vein stage (I), quartz pyrite vein stage (II), quartz polymetallic sulfides stage (III), and quartz carbonate vein stage (IV). This study carried out Rb-Sr isotopic dating for the sphalerites from main mineralization stage of the Jijiawa Au deposit to restrain the ore forming time. The yielded isochron age of 118.2±2.4Ma suggests that the deposit was formed in Early Cretaceous. The age is basically in agreement with that of Miaoling, Qiyugou, Gongyu and other gold deposits in the Xiong’ershan area, which is of significance in constraining the ore forming age in the Xiong’ershan area. Sr and Pb isotope analysis shows that the Jijiawa Au deposit had a mixing origin of the materials from crust and mantle, with the Early Cretaceous granite likely contributing main metallogenic materials. In the context of regional geology, we suggest that the Jijiawa Au deposit was the product of the regional intensive tectono magmatic fluid activity in the Xiong’ershan area in Early Cretaceous, and it is also a component part of the large scale gold mineralization in eastern China.