Jadeite quartzite in the Dabie ultra-high-pressure metamorphic belt: A novel high-grade high-purity quartz resource

Key Points

• High-purity quartz samples show impurity levels as low as 11.8–22.4 ppm, indicating excellent quality.
• Key impurities, aluminum and titanium, average at 2.8–7.5 ppm and 2.6–3.6 ppm, respectively, closely matching top international standards.
• Analysis involved systematic sampling and in-situ microelement studies to evaluate quartz quality.
• Implications for resource exploration suggest that conditions during crystallization under high-pressure significantly affect purity.