MARBLE

Marble is metamorphic rocks have been modified by heat, pressure and chemical process usually while buried deep below Earth’s surface. Exposure to these extreme conditions has altered the mineralogy, texture and chemical composition of the rocks. There are two basic types of metamorphic rocks: 1) foliated metamorphic rocks such as gneiss, phyllite, schist and slate which have a layered or banded appearance that is produced by exposure to heat and directed pressure; and, 2) non-foliated metamorphic rocks such as marble and quartzite which do not have a layered or banded appearance.

The stone can also be used for countertops, but because it’s so soft it should be used sparingly in the kitchen. In some countertops, most of the surface is made of igneous stone, with a few small areas of the metamorphic stone used for making pastry. The stone is good for pastry making because it’s cool. Hot items shouldn’t be put directly on it and coasters should be placed on the stone to support glasses that hold acidic beverages like orange juice.

This stone is a metamorphic rock, which means that it was changed from one form of rock into another. In this case, the original rock was limestone. It is a form of limestone that’s become hard enough to be polished to a high shine. As with our igneous stone, metamorphic stone can come in all kinds of colors and can be shot through with veins or clouds. All are made up of calcite or dolomite which is in their pure state are perfectly white. As with igneous stone, this beautiful stone gets its color from the inclusion of other minerals like sand, chert, iron oxides or clay.

Marble can be used for countertops such as kitchen and bath and pretty much for all indoor use. However, it’s much softer than igneous stone and should be used outdoors carefully, even though there are buildings with skins of metamorphic stone, like the Taj Mahal.

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