The Jiajika rare-metal mining area is currently the largest lithium-dominated granite-pegmatite type rare-metal field discovered in China, hosting a wide range of pegmatite dike types. Granite-pegmatite type high-purity quartz (HPQ) serves as one of the most important raw materials for global HPQ production. Quartz, as the principal rock-forming mineral in pegmatites, has trace-element compositions and concentrations that are critical indicators for evaluating its potential as a granite-pegmatite type HPQ siliceous raw material. However, previous studies have scarcely addressed the trace-element geochemistry of quartz in this field. Methods: In this study, quartz from representative pegmatite types was analyzed using in-situ LA-ICP-MS to determine trace-element concentrations and compositions, allowing evaluation of its potential as high-purity siliceous feedstock, identification of promising targets for HPQ exploration, and recommendations for the integrated utilization of quartz resources during rare-metal development. Results: The results indicate that quartz in different pegmatite types contains relatively high concentrations of trace elements such as Al and Li (Li = 59.6×10-6~181×10-6; Al = 254×10-6~672×10-6), with the total concentration of 13 major impurity elements (∑13) ranging from 340×10-6to1005×10-6. Except for one sample, quartz exhibits a SiO2 content ≥ 99.9% (3N), corresponding to the lower limit of HPQ or high-purity quartz feedstock standards. Among the five pegmatite types, the spodumene-type pegmatite, currently exploited as an industrial deposit, is characterized by relatively low impurity concentrations in its quartz, with SiO2 content exceeding 99.95% (3N5). Consequently, the efficient utilization of this quartz should be given high priority during rare-metal resource development. Conclusions: Pegmatites formed through magmatic differentiation in the Western Sichuan rare-metal fields generally display elevated Al and Li concentrations, reducing their suitability as high-quality HPQ siliceous feedstock. Therefore, future exploration for high-grade granite-pegmatite type HPQ should focus on muscovite granite-pegmatites of metamorphic origin in the Danba area.