TheYaojialing large zinc gold polymetallic deposit is located in the eastern part of the Tongling uplift district. It is a recently discovered large zinc gold deposit in the Middle Lower Yangtze River Valley metallogenic belt and it is also the first large zinc gold deposit in the Tongling district with drilling indicated reserves of 1.2 Mt of Zn with an average ore grade of 3.64%, 50 t of Au, and Pb, Cu and Ag as by products. The dominant orebodies, whose shapes commonly consist of vein or lenticular, occur along the contact zone between early Cretaceous granodiorite porphyry intrusion and Carboniferous Triassic limestone or situate inside limestone xenoliths entrapped within the porphyry intrusion. The common ore minerals comprise sphalerite, galena, chalcopyrite, gold, pyrite, minor scheelite, molybdenite, bornite, hematite and magnetite, etc. Gangue minerals include calcite, garnet, K feldspar, quartz, fluorite, epidote and so forth. Metasomatic texture, subhedral to anhedral granular texture and disseminated massive structure are regarded as the staple ore texture and structure. Wall rock alterations existed in the deposit are well developed and mainly present as K feldspar alteration, skarnization, silicification, sericitization, carbonatization, clayzation. Needs to be stressed that skarnization, silicification and carbonatization are closely associated with mineralization. Scheelite has been discovered in some locations especially in the skarn on the contact between limestone and granodiorite porphyry intrusion. Compared with the theoretical values for scheelite composition, the value of WO3 in the deposit is generally a little lower than the theoretical value whereas the value of CaO is slightly higher. There are some other impurities including SrO, MoO3, CuO, FeO, MnO, MgO, V2O5 and PbO2. The chemical formula for scheelite is Ca1.00W0.99O4. The discovery of scheelite in the Zn Au Cu Pb deposit in Tongling area indicates that metallogenic system evolution and hydrothermal mineralization probably witnessed the slight crust mantle interaction in the area. Related research should be encouraged and strengthened in other areas of the Middle Lower Yangtze River Valley metallogenic belt.