Quartz

kworts, n. the common form of native silica, or the oxide of silicon, occurring both in crystals and ma ive, scratching gla easily, and becoming positively electrical by friction, colourle when pure—Rock-crystal, Common, and Compact Quartz.— ns. Quartz′-crush′er , -mill , a machine, mill, where auriferous quartz is reduced to powder, and the gold separated by amalgamation.— adj. Quartz if′erous .— ns. Quartz′ite , Quartz′-rock , a common rock, usually white, gray, or rusty in colour, and composed of an aggregate of quartz-grains welded together.— adjs. Quartz it′ic ; Quartz′ose , of or like quartz; Quartz′y . [Ger. quarz .]