What is marble made of?
Marble is formed from limestone. Some limestone is made when sea creatures die and their skeletons and shells fall to the bottom of the ocean. They pile on top of each other, push on the lower layers, and the pressure makes limestone. All limestone starts in water. Fossilized materials in the limestone along with its original carbon minerals form large grains known as calcite. These calcites melt under the heat and high pressure which comes from the earth’s crust. And bingo! Marble is created! These forces cause the limestone to change in texture and makeup and make marble strong and resistant to fire and wear-and-tear or erosion. This process is called recrystallization. Whatever is mixed in with the limestone decides the final colour of the marble. If limestone is pure, you get white marble. If it has hematite or clay in it, you will get a reddish color marble. Marble that has limonite is yellow, and marble with serpentine is green. Most marble is large grained and comes in many colo
