Abstract: The strata,magmatic rocks,structure in Dongxidatan metallogenic prospective area and the regional geochemical anomaly characteristics are analyzed,the metallogenic regularity is summarized and the metallogenic prediction results are analyzed in detail.The traditional statistical methods are adopted to ring out single element anomalies such as Au,As,Sb,etc.,then,four integrated anomalies are delineated out.It is preliminarily considered that the lower triassic Bayankala group is the main ore-forming strata,and the ore-body distribution is controlled by the NWW brittle faults and interlayer sliding.Mineral deposits are mainly Sb-Au deposit of tectonic altered rock type and Sb-Au-Cu deposits of quartz vein type.Ore minerals are mainly the low temperature metallic minerals.The regional geochemistry shows that it has an unique characteristics of variation from west to east.The Au,Sb,As anomalies have a good overlap and the high intensity of anomalies area are favorable for ore prospecting.Five prospecting target areas are delineated finally,which has a most indicating significance for ore prospecting in the future.

Key words: Dongxidatan Sb-Au deposit, Metallogenic regularity, Target prediction