Abstract:The southern Zhuguangshan complex pluton (SZCP) is one of the important uranium mineralization areas hosted in granitoid in China, and a few granites in SZCP show relationship with tungsten mineralization. The Chashan granite with less attention is located in the north central area of the SZCP. The LA-ICP-MS zircon U-Pb dating yields an age of 142.8 ± 1.9 Ma, suggesting that the Chashan granite was formed in the Early Yanshanian. Petrographically the Chashan granite contains commonly muscovite, and is characterized by enrichment of SiO2, mildly high alkalinity, and depletion of Fe2O3, MgO, CaO and P2O5. Geochemically it also shows the highly fractionated (DI = 92.2 ~ 95.6) and peraluminous (ACNK = 1.00 ~ 1.08) characteristics. The most of samples display low total REE contents (∑REE = 90.5 × 10-6 ~ 163 × 10-6), negative Eu anomalies (δEu = 0.04 ~ 0.08), enrichment of Rb, U and Ta, and depletion of Ba, Sr, Ti and P. Petrographical and geochemical features of these samples suggest a highly fractional S-type granite. Isotopically, the Chashan granite has low and constant εNd(t) values (-10.6 ~ -9.4) with two stage model age of 1.70 ~ 1.80 Ga. Integrated with the values of Rb/Sr (12.6 ~ 77.3) and CaO/Na2O (0.10 ~ 0.28), we suggest that the granitic magma of the Chashan granite, formed in the Early Yanshanian intraplate extensional environment, may have been derived from partial melting of metapelite originated form the ancient crust rocks separated from the mantle in the Paleoproterozoic. Based on the comparison and contrast, the Chashan granite show similar geochemical proxies with Indosinian uranium-bearing granites and Yanshanian tungsten-bearing granites in South China, but samples of the Chashan granite have extremely low tungsten concentration (1.60 × 10-6 ~ 3.94 × 10-6), indicating relatively low tungsten metallogenic potential. Those samples exhibit high uranium content (averaging 19 × 10-6) and common presence of uranium in some U-riched accessory minerals (such as uranothorite) which are prone to be leached. In addition, the faults were well and extensively developed in this area, resulting in the granite being intruded by late stage granitic dykes and experiencing significant hydrothermal alteration. Uranium mineralization found in the northwest part of the Chashan granite and pitchblende was discovered by drilling zk55-4. In conclusion, the Chashan granite shows a greater uranium metallogenic potential.