Bayan Tal Mo Deposit Geological Characteristics of Inner Mongolia

The Bayan Tal Mo deposit is located in the Ulji-Oubu La Cu-Au Metallogenic belt, with Mo-bearing orebodies hosted by the upper Carboniferous Amushan Formation. The shape of orebody is obviously controlled by structures (mainly faults) and formation lithology, and distribution of which is consistent with skarn and hornfelsed rocks. Nowadays, two ore bodies are blocked out. The average grade and highest grade of molybdenum of ore body No.1-1 is 0.12×10^-2 and 8.55×10^-2, respectively, with great variation coefficient, while the average grade of ore body No.1-2 is 0.73×10^-2. Alteration of this deposit is well developed, of which skarnization and hornfelization are closely associated with Mo mineralization. The geochemical anomalies have the element association of Mo, Au, Ag, Cu, Zn, W, Sn, and Bi, and they are consistent well with each other (abundence of each element in this deposit is four times more than its background value). Both the features of alteration and anomalous elements in the Bayan Tal Mo deposit have the characteristics of skarn deposit.