Abstract: Renli deposit in Hunan Province is the richest and largest super-large pegmatitic tantalum deposit since the foundation of China. And it is rich in rare metal minerals such as tantalum niobium, beryllium and high-purity quartz raw material mineral resources. To understand the quality of pegmatition type high-purity quartz raw materials in this area and provide references for the comprehensive development and utilization of the mine, the authors in this paper carried out a study on the characteristics of quartz raw minerals, inclusions and impurity content in pegmatite, as well as a comparative study with vein quartz in adjacent areas. The results show that the quartz minerals in pegmatite in this area are transparent to semi-transparent, with an average SiO₂ content of 99.982%, and the total content of 14 impurity elements such as Al, B, Ca is 110.06×10^-6 on average in mineral samples. The average content of Al is 43.18×10^-6, and the average content of Ti is 4.90×10^-6. Under the microscope, the size of quartz grains are different with certain tensile deformation, and the surface permeability is good. Fifty percent of the grains have no fluid inclusions, and the inclusion type is H₂O-NaCl type with gas and liquid phases. The inclusions have various shapes, bright colors, and large individual morphological differences. The diameter of most of the inclusions is less than 4 μm, with the smallest individual being less than 1 μm and largest individual of being more than 32 μm. The area ratio of inclusions in the field of view is less than 5%. The high-purity quartz raw materials in this area have excellent endowment conditions and are excellent high-purity quartz raw materials. It is predicted that the potential resources of high-purity quartz raw materials in Renli deposti exceed 3 000 wt. with reinforcement of research on beneficiation and purification processes, it is expected to obtain high-purity quartz products of 4N8 and above. This research could provide references for the construction of high-purity quartz industry base in Pingjiang County and the development of high-purity quartz industry in the northeastern Hunan Province.