Black Granite Stones Thick Slab Vanity Tops 60x180cm

1. Formation & Nature

• Granite is an igneous rock, formed from the slow crystallization of magma beneath the Earth’s surface.

• It is intrusive (forms underground) and coarse-grained, meaning its mineral crystals are large enough to be seen with the naked eye.

2. Composition

• Major minerals: Quartz, plagioclase feldspar, alkali feldspar.

• Minor minerals: Mica (biotite, muscovite), amphibole, pyroxene.

• These minerals give granite its speckled appearance, often with pink, white, gray, or black grains.

3. Physical Properties

• Color: Light-colored, ranging from pink to gray.

• Texture: Coarse-grained, crystalline.

• Density: Around 2.64 g/cm³ (range: 2.50–2.81 g/cm³).

• Hardness: Very durable, resistant to weathering and abrasion.

4. Occurrence

• Found in continental crust, often in large igneous intrusions called batholiths.

• Can also appear in smaller formations like dikes and sills.

5. Uses

• Construction: Widely used for building blocks, flooring, and monuments due to its strength.

• Decorative: Polished granite is popular for countertops, tiles, and sculptures.

• Engineering: Used in bridges, paving, and as crushed stone for road building.