The massif is the oldest (760 Ma.)uraniferous granite known in South China. The massif is represented by two types , of uranium mineralization; the chlorite-vein type (deposit A) and the microquartz-vein type (deposit B). The deposit A is located near the contact zone of the massif and formed at Hercynian period (330 Ma. ago).The deposit B is located in the, massif and occurred at Himalayan period (47 Ma. ago). Characteristic contrast of physical properties, chemical composition, isoto- pic composition of. lead and others of pitchblende in two uranium deposits fully reflects geochemical setting, characteristic of ore-forming fluids and source of ore. Pitchblende in the deposit A has larger cell size, higher reflectan- ce, smaller oxidation coefficient, to be xiched in Mg, Fe and A1 characterized in metamorphic rock, higher mineralization temperature anal very low content of initial lead. The reflect that the pitchblende has formed at hypogenic setting with high temperature and pressure of mineraIization was related to meta- morphism. Pitchblende in the deposit B has smaller cell size, lower reflectan- ce, larger oxidation coefficient, Lower mineralization ternperature, rich calcium and initial lead, typical colloid texture and vein filling, which all indicate that the pitchblende has formed at supergene setting with middle-low temperature and pressure of mineralization was related to hypergene hydrothermal pro- cess.