China has discovered two high-purity quartz deposits, one near Qinling, Henan province, and the other in Altay, Xinjiang. The ...

Chemically, quartz is nearly pure silicon dioxide (SiO 2). When there are no impurities, pure quartz is water-clear and often referred to as “rock crystal”. Impurities can give transparent ...

In case you missed that, a tube furnace is basically a long, fused quartz tube wrapped in electrical ... the task by creating a thin layer of silicon dioxide on a scrap of silicon wafer.

According to a report by CCTV, journalists learned from the Ministry of Natural Resources today (10th) that the "Announcement on Newly Discovered Mineral Species" was recently released, identifying a ...