Choosing a kitchen countertop is a bit like dating—you want something attractive, reliable, low-maintenance, and preferably ...

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.

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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 ...