A slice of quartz ground to a prescribed thickness that vibrates at a steady frequency when stimulated by electricity. The tiny crystal, about 1/20th by 1/5th of an inch, creates the computer's ...

China announced it has discovered new deposits of high-purity quartz, a mineral with a small but crucial role in the production of semiconductors and solar panels. High-purity quartz is one of the ...

SINCE quartz is transparent in the ultra-violet, the employment of the powerful technique for Raman-effect studies developed by Rasetti, in which the 2537 A. radiation from a water-cooled magnet ...

China’s Ministry of Natural Resources has announced the discovery of two major high-purity quartz deposits – one near Qinling, Henan province, and the other in Altay, Xinjiang region.