中文摘要：

对粤北302花岗岩型热液铀矿床中的方解石、石英、萤石等脉石矿物进行了系统的流体包裹体测温和方解石碳同位素研究,结果表明自矿前期至矿后期,成矿流体的演化具有盐度和均一温度不断降低的趋势;矿前期存在两次中高温度和中高盐度的流体作用。不同期次的方解石碳同位素1δ3CPDB值为-6.14‰～-9.71‰,表明流体中的碳来自于深部的岩浆——地幔源。

英文摘要：

The temperature of fluid inclusions in gangue minerals such as calcite,quartz,fluorite was measured and carbon isotope composition of Calcite was studied for uranium deposit No.302 in north Guangdong in this paper.It shows that the homogeneous temperature and salinity decreased from the early ore-forming period to late ore-forming period,and the early ore-forming period had at least two-staged fluid process with medium-high temperature and salinity.The carbon isotopic composition of δ13CPDB of calcites of different stages are：-6.14‰～-9.71‰ which indicates that the carbon maybe came from deep crust.