fig10
![Recent advances in the marketing, impurity characterization and purification of quartz](https://image.oaes.cc/036f0845-0107-47fd-9d89-518c1048755f/mmm2017.fig.10.jpg)
Figure 10. (A) XRD refined physical phase analysis of quartz mineral; (B) Shows an SEM electron micrograph of the quartz ore; (C) Photograph of this type of quartz ore under a polarizing microscope; (D) Polarized light microscope photograph of quartz ore after physical purification. SEM: Scanning electron microscopy; XRD: X-ray diffraction.