The Damiao iron deposit is located at the southern margin of the Damiao plagioclase rock body and northern side of the southern edge of HongshilaDamiao deep fault. Based on the alteration, anorthosite, the major type of rock in the mining area, can be subdivided into saussuritized anorthosite, chloritized anorthosite and mixed anorthosite. The saussuritized one is widely distributed in the mining area, while the others often constitute the surrounding rock of iron mine. Norite body related to the formation of the iron orebody in the Heishan iron mine is controlled by an EWtrending LongtangouChagou compressional fault and is distributed mainly within the Heishan anorthosite body. Differential disseminated orebodies occur in partial norite bodies, whereas injection orrebodies occur the contact zone of norite and its surrounding rocks. Based on the characteristics and association of norite, the norite in this region can be divided into two series： ① norite series （noritetype rock body, olivinebearingnoritenorite type rock body）; ② monzonitenorite series （monzonite noritetype rock body, monzoniteolivine norite rock body）. The ore textures are mainly euhedralsubhedral grainshaped, gridshaped dissolution and spongeshaped siderite textures, with structures being dense massive and disseminated. The ore minerals consist of mainly vanadiumtitanium magnetite （3%~60%）, ilmenite （2%~19%）, vanadiumbearing magnetite （7%~27%）, and minor cobaltbearing pyrite and chalcopyrite. Gangue minerals are mainly chlorite （7%~33%）, plagioclase （0%~45%）, and less amount of other minerals. Distinctly different from other norites from both China and world, the Heishan norite is high in Si, Al, Fe, Ti, P, Na, K, and low in Ca, Mg, which provide the source for the ironphosphate deposit. The oxygen isotope （δ18O） of anorthosite, norite iron deposits and ironphosphate deposits in this area are confined within a narrow range, reflecting that they came from the same material source. The δ34S of Heishan norite and pegmatite norite is distributed between +1.3‰ and +2.1 ‰, reflecting the norite magma originated from the upper mantle.The temperature calculation of the apatite in the Heishan ironphosphate yielded the result of 600~700 ℃, and the forming temperature of VTi magnetite orebody temperature ranges from 700 to ~1000 ℃, showed the characteristics of magmaforming high temperature deposit. This study suggests that the two major iron ore bodies are the products of magma penetration.