quartz


quartz

quartz [kwawrts] ExamplesWord Origin noun

  1. one of the commonest minerals, silicon dioxide, SiO2, having many varieties that differ in color, luster, etc., and occurring either in masses (as agate, bloodstone, chalcedony, jasper, etc.) or in crystals (as rock crystal, amethyst, citrine, etc.): the chief constituent of sand and sandstone, and an important constituent of many other rocks. It is piezoelectric and used to control the frequencies of radio transmitters.

Origin of quartz First recorded in 1750–60, quartz is from the German word Quarz Related formsquartz·ose [kwawrt-sohs] /ˈkwɔrt soʊs/, quartz·ous [kwawrt-suh s] /ˈkwɔrt səs/, adjectiveCan be confusedquarts quartz Examples from the Web for quartz Contemporary Examples of quartz

  • They measured the amount of different isotopes of xenon trapped in quartz crystals.

    The Moon’s Been Lying About Its Age

    Matthew R. Francis

    June 15, 2014

  • In 2008, NASA discovered crystals with a similar make-up to quartz surrounding young stars.

    Space Bling: From Diamond Planets to Crystal Oceans to Precious Moon Jewels

    Alexa Valiente, Jaewon Kang

    October 13, 2012

  • Composite fillings are typically made of glass or quartz mixed with resins and adhesives.

    Can Children’s Dental Fillings Spur Depression?

    Florence Williams

    July 16, 2012

  • Quartz orange juice and rice with chicken and French fries for lunch and same for dinner.

    From Terror Suspect to College Graduate

    Amitava Kumar

    May 19, 2012

  • Historical Examples of quartz

  • Only the first is distinguished by the segregation of the quartz.

    The Long Labrador Trail

    Dillon Wallace

  • The minerals at contact are quartz, biotite, magnetite and hornblende.

    The Long Labrador Trail

    Dillon Wallace

  • Pyroxene, quartz and augite form the groundmass, as seen in section.

    The Long Labrador Trail

    Dillon Wallace

  • The quartz is put in at the head of the battery, and is gradually driven to the foot.

    Hittel on Gold Mines and Mining

    John S. Hittell

  • A railroad four miles long, conveys the quartz from the lode to the mills.

    Hittel on Gold Mines and Mining

    John S. Hittell

  • British Dictionary definitions for quartz quartz noun

    1. a colourless mineral often tinted by impurities, found in igneous, sedimentary, and metamorphic rocks. It is used in the manufacture of glass, abrasives, and cement, and also as a gemstone; the violet-purple variety is amethyst, the brown variety is cairngorm, the yellow variety is citrine, and the pink variety is rose quartz. Composition: silicon dioxide. Formula: SiO 2 . Crystal structure: hexagonal
    2. short for quartz glass

    Word Origin for quartz C18: from German Quarz, of Slavic origin Word Origin and History for quartz n.

    “silicon dioxide,” 1756, from German Quarz, Zwarc “rock crystal,” from Middle High German twarc, probably from a West Slavic source, cf. Czech tvrdy, Polish twardy “quartz,” noun uses of an adjective meaning “hard,” from Old Church Slavonic tvrudu “hard,” from Proto-Slavic *tvrd-, from PIE *(s)twer- “to grasp, hold; hard.”

    quartz in Medicine quartz [kwôrts] n.

    1. A very hard crystalline form of silicon dioxide used in chemical apparatus and in optical and electric instruments.

    quartz in Science quartz [kwôrts]

    1. A hard, transparent trigonal mineral that, after feldspar, is the most common mineral on the surface of the Earth. It occurs as a component of igneous, metamorphic, and sedimentary rocks as well as in a variety of other forms such as rock crystal, flint, and agate. Some crystalline forms, such as amethyst, are considered gemstones. Chemical formula: SiO2.

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