Abstract: The western Shandong is an important gold deposit concentration zone in China,and its long history of development has led to a continuous decline in resource reserves,making the discovery and verification of new mineral deposits an urgent task. The Sanchahe Iron–Gold Deposit is located in the southeastern part of the North China Craton,where Ordovician carbonate rocks and Yanshanian diorite are well developed,providing favorable conditions for skarn-type mineralization.This deposit is the first confirmed skarn-type iron-gold co-genetic deposit （without copper） in Shandong Province,with a genesis type belonging to the skarn type and a scale reaching medium size;the ore body morphology and attitude are relatively stable, emplaced at the contact zone of carbonate rock xenoliths within diorite and constrained by the contact zone structure.The ore minerals are dominated by magnetite,with pyrite and native gold associated;wall rock alteration is manifested as skarnization,phlogopitization,and carbonatization. In this study,LA-ICP-MS in situ Rb-Sr dating was conducted on phlogopite,yielding an isochron age of 128 Ma±15 Ma,which further constrains the formation age of the deposit and supplements new geochronological data for regional metallogenic correlation.This deposit is a new discovery in gold prospecting in the area,achieving a prospecting breakthrough for skarn-type gold deposits in Luxi, which not only provides a theoretical reference for the exploration of similar deposits but also has guiding significance for the deployment of deep and peripheral prospecting.