What is Granite?

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Granite is the hard rock that forms much of the earth's outer crust. The name "granite" comes from the Latin word gramim, meaning" grain". The grains in granite are crystals of quartz, feldspar, mica, and hornblende.Granite varies in colour. It may be greyish or pinkish and it may also be coloured by impurities. Granite is one of the "igneous", or fire-made rocks. It is formed, for the most part, at some depth in the earth. Granite was formed when hot rock or molten "magma" was slowly cooled in the earth. Magma is a dough-like rock.

Granite is usually formed under mountain folds where the rocks on the surface act like a blanket to prevent its rapid cooling. The only time it is found at the surface is when the rocks lying on top of it have been worn away by wind, water, or ice. It may also have been thrust upward by movements of the earth. When the surface rocks have weathered away, the great masses of harder granite are left. In the UK,  Dartmoor, the rugged Cornish Coast, the Lake District, the Antrim Hills and the Isle of Skye are all granite outcrops.

Granite is one of the strongest building stones. It is used for building exteriors, interiors and worktops. The ancient Egyptians used granite to build temples, columns, and the pyramids.