| The geological conditions for the formation of molybdenum polymetallic deposits in the Chenzhan area of the southern section of the Sulu orogenic belt are favorable, but the research degree is relatively low, which is a constraint on the comprehensive exploration of mineral resources in the region. Based on the previous geological achievements such as stratigraphy, tectonics, and magmatic rocks, the geological work such as physical and chemical exploration, trenching, and drilling has been carried out. The geological characteristics of molybdenum polymetallic deposits in the Chenzhan area have been studied, and the main controlling factors of mineralization have been explored. The research results show that the main ore-controlling rock body of molybdenum polymetallic deposit in Chenzhan area is the diorite-monzonite Granite. The thickness of the molybdenum mineralized body is approximately 1m, the ore type is veinlet-disseminated, and the ore mineral is molybdenite, with the molybdenum grade is 129.37×10-6. The lead-zinc mineralized body occurs within a dark quartz vein in the dioritic granite, with a vein width of 10cm. The lead-zinc ore with Pb anomaly 997.9×10-6 and Zn anomaly 729.6×10-6, with Galena and Sphalerite enriched in the form of sulfides. The main alteration types are chloritization, pyritization, potassium feldsparization, silicification, and high clayization. The genetic type of the molybdenum-polymetallic deposit in the Chenzhan area is a porphyry-type deposit. The mineralization is primarily controlled by tectonic activity and magma. Tectonic activity determines the location of mineralization, while fault zones provide pathways for magma and hydrothermal fluids. The intermediate-acidic magmatic activity provides ore and heat sources, and the magma carries ore-forming materials such as molybdenum, forming porphyry-type molybdenum mineralization within the rock body and at the contact zone. The molybdenite mineralization is primarily disseminated in granular form, followed by veinlet-like structures, which ere enriched in areas with strong potassium and silicon alteration, forming porphyry-type Molybdenum ore-bodies. |
