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![Recent advances in the marketing, impurity characterization and purification of quartz](https://image.oaes.cc/036f0845-0107-47fd-9d89-518c1048755f/mmm2017.fig.2.jpg)
Figure 2. (A) The distribution of quartz ore reserves in China; (B) The global quartz ore reserves; (C) The change of quartz in various fields in China (https://gonyn.com); (D) The global and major countries’ high-purity quartz sand production capacity.