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a colourless glass composed of almost pure silica, resistant to very high temperatures and transparent to near-ultraviolet radiation Also called silica glass, nitreous silica Sometimes shortened to quartz


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  • Quartz-iodine lamp

    noun 1. a type of tungsten-halogen lamp containing small amounts of iodine and having a quartz envelope, operating at high temperature and producing an intense light for use in car headlamps, etc

  • Quartziferous

    [kwawrt-sif-er-uh s] /kwɔrtˈsɪf ər əs/ adjective 1. consisting of or containing : quartziferous rock. /kwɔːtˈsɪfərəs/ adjective 1. containing or composed of quartz

  • Quartzite

    [kwawrt-sahyt] /ˈkwɔrt saɪt/ noun 1. a granular metamorphic rock consisting essentially of in interlocking grains. /ˈkwɔːtsaɪt/ noun 1. a very hard metamorphic rock consisting of a mosaic of intergrown quartz crystals 2. a white or grey sandstone composed of quartz n. 1837, from quartz + -ite. quartzite (kwôrt’sīt’) A metamorphic rock consisting entirely of quartz. […]

  • Quartz-lamp

    noun 1. a lamp consisting of an ultraviolet light source, as mercury vapor, contained in a fused-silica bulb that transmits ultraviolet light with little absorption.

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