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PHYSICS>>     Products     >> PHYSICS ............................................................   >> CHEMISTRY ............................................................   >> BIOLOGY ............................................................   >> BIOLOGY MODELS ............................................................   >> MICROSCOPES ............................................................   >> PLASTIC LABWARE ............................................................   >> GLASS LABWARE ............................................................   >> PORCELAIN WARE ............................................................     >> LABORATORY EQUIPMENTS ............................................................   >> LABORATORY HARDWARE ............................................................   >> EDUCATIONAL INSTRUMENT ............................................................   >>LABORATORY CHEMICALS QUALITY POLICY MANUFACTURING FACILITIES SOLIDS LABEL SPECIMEN HAZARD SYMBOLS QUALITY ASSURANCE SOLVENTS ............................................................       DESCO Rock Slide, Granite Rock Slide, Granite (Igneous Rock) The specimen above is a typical granite. It is about two inches (five centimeters) across. The grain size is coarse enough to allow recognition of the major minerals. The pink grains are orthoclase feldspar and the clear to smoky grains are quartz or muscovite. The black grains can be biotite or hornblende. Numerous other minerals can be present in granite.

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