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rock believed

Granite, coarse-grained rock, composed chiefly of feldspar (orthoclase and microcline) and quartz. Generally believed to have solidified from a molten form (igneous), some granite is also believed to have been metamorphic (rock transformed by heat, pressure, or chemically active fluids). A hard, weather-resistant rock, usually pink or gray, granite is often used in building, paving, and monuments.

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