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Marble rock is a transformed or metamorphosed limestone comprising of fairly pure calcite mineral. When limestone in its formation stage is subjected to high temperature and pressure, the composition, which is the calcite mineral, melts causing appearance and texture change in limestone. With limestone crystallization and any Fossils, a bigger grain of calcite is formed; this is marble. The composition of the minerals present in the crystal causes the marble rock to take a certain colour.

When there is no other mineral present during the extreme heating process, a white marble is formed. The presence of clay or iron ore in the earths crust during the marble formation can make it take on a reddish color. With silica in the parent rock, recrystallization will bring about the formation of crystals of quartz in the marble. Yellow marble is formed when there is limonite in the parent rock, and a green one is formed if there is serpentine in it.

Some important types of marble are named after their quarry locations; these are as follows; Carrara (Italy), Pentelicus (Greece), Proconnesus (Turkey). Carrara is a white marble that has been prized highly for sculpture from classical times. Carrara is preferred for this purpose because of its soft nature, peculiar isotropy and homogeneity. It is also resistance to shattering. Light can easily penetrate into this stone before diverging out because of the low refraction index of the calcite mineral composition. This gives this stone its known waxy look, which is responsible for the life seen in marble sculptures.

This metamorphosed limestone can be used in so many ways; from classical times, marble is highly valued and prized because of its strength, beauty and resistance to heat and erosion. Marble was used by the ancient Greeks for buildings and statues. This is because it is soft and can easily be cut and shaped. Marble made from highly pure calcite are mostly used for statues. Colored types of this stone in large blocks can be used in floors, columns and other parts of the building. Smaller pieces are ground into a fine powder for use as abrasive in soaps and any other product that requires an abrasive. Crushed form can also be useful in road paving, roofing material manufacturing and within the production of soil treatment products.

Marble also has home usage, which can be applied in the following; it is used for countertops, wall, floor sinks, ceiling tiles, stool, wall sconces, lamp bases, shades and many more. It can also be useful in mosaics, production of trinket boxes and picture frames, and for inlay work in wood.

Marble can be used for both interior and exterior applications but worthy of note is that with today's polluted environment, for these stones to last, you need to ensure a polished finish is not used on it.

Additional Resources

Manganese Oxide   Marble Uses   Marble Arch

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