Marble is a metamorphic rock made when limestone or dolostone is changed by heat and pressure inside the Earth.

Quick Scoop

  • Marble starts as sedimentary rock (usually limestone or dolomite) and then recrystallizes under high temperature and pressure, which is why it is classified as a metamorphic rock.
  • It is composed mainly of the mineral calcite, sometimes with dolomite and small amounts of other minerals that give it veins and colors.
  • Because of its crystalline texture and ability to take a polish, marble has been used for thousands of years in sculpture and buildings.

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