Abstract: The establishment of general industrial indicators and material ore quality classification for mineral deposits is a fundamental research work for geological prospecting, exploration, and evaluation of. It is of great significance for the basic geological research, reserves estimation, later development and utilization of high−purity quartz (HPQ)deposits. HPQ mineral is the 174th newly mineral species in China, and the classification of its ore quality remains lacking. Based on the typical HPQ companies’ HPQ sand standards and their mainly application fields, this paper analyzes the characteristics of impurity elements and inclusions in HPQ sand used in semiconductor, photovoltaic, electric light source and other fields by typical HPQ enterprises. We propose that: (1) Different application fields have different technical requirements of HPQ sand for impurity elements, inclusions etc., corresponding to different ore qualities. Therefore, the classification of HPQ ore quality should be combined with industrial applications; (2) Generally, the requirement for impurity elements content in the semiconductor field is higher than that in the photovoltaic field, which in turn is higher than that in the electric light source field. In addition to the total content of impurity elements, different application fields also have varying requirements for individual impurity components; (3) The requirement for fluid inclusion content in the inner layer of quartz crucibles is higher than that in quartz ingots, followed by the middle and outer layers of quartz crucibles, and then the quartz tube for electric light sources. Considering the application characteristics and mineral species attributes of HPQ, it is proposed to classify the HPQ ore into four categories: photovoltaic crucible−grade HPQ ore, semiconductor crucible−grade HPQ ore, quartz tube−grade HPQ ore, and ingot−grade HPQ ore.