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China has announced the discovery of more than 35 million metric tons of high-purity quartz (HPQ) in two regions—Qinling in ...
China has discovered two high-purity quartz deposits, one near Qinling, Henan province, and the other in Altay, Xinjiang. The ...
Quartz, though, is at least a partial exception ... silicon for the Czochralski method of growing monocrystalline silicon ingots. The piezoelectric effect, a property of certain crystals to ...