Quartz
[kwɔːts] or [kwɔrts]
Definition
(noun.) a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities.
Editor: Stephen--From WordNet
Definition
(n.) A form of silica, or silicon dioxide (SiO2), occurring in hexagonal crystals, which are commonly colorless and transparent, but sometimes also yellow, brown, purple, green, and of other colors; also in cryptocrystalline massive forms varying in color and degree of transparency, being sometimes opaque.
Editor: Stanton
Synonyms and Synonymous
n. Silex, silica, ROCK-CRYSTAL.
Checker: Maisie
Definition
n. the common form of native silica or the oxide of silicon occurring both in crystals and massive scratching glass easily and becoming positively electrical by friction colourless 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. Quartzif′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. Quartzit′ic; Quartz′ose of or like quartz; Quartz′y.
Typist: Nora
Examples
- Here and there they were broken with streaks and patches of dusky red, green, and occasional areas of white quartz. Edgar Rice Burroughs. The Gods of Mars.
- A loud-speaking telephone with quartz cylinder and beam of ultra-violet light. Frank Lewis Dyer. Edison, His Life and Inventions.
- They raced wildly after me until, finally, my foot struck a projecting piece of quartz, and down I went sprawling upon the moss. Edgar Rice Burroughs. A Princess of Mars.
- It is commonly found in reefs or veins among quartz, and in alluvial deposits; it is separated, in the former case, by quarrying, crushing, washing and treatment with mercury. Various. The Wonder Book of Knowledge.
- It looks like quartz crystals sticking up out of the dark hollow. D. H. Lawrence. Women in Love .
- Tunnels through mountain walls, and wells through solid quartz are cut to the depth of thousands of feet. William Henry Doolittle. Inventions in the Century.
- In some instances the wood has been converted into solid jasper or has been changed into opal or agate, or filled with chalcedony or crystallized quartz, with beautifully variegated colors. Various. The Wonder Book of Knowledge.
Editor: Oswald