Physical Properties of Granite
Durability and Hardness: Granite is renowned for its hardness and durability, owing to the interlocking crystal structure formed during the slow cooling of magma. This makes it resistant to scratches and wear, ideal for surfaces that endure regular use.
Texture and Grain Size: The phaneritic texture of granite, characterized by grains visible to the naked eye, is a hallmark of its slow crystalline formation. The size and arrangement of these grains can vary, giving each granite piece a unique appearance.
Color Variations: The color of granite can range from pink to gray, depending on its mineral composition. Quartz typically imparts a gray or white color, while feldspar adds pink, orange, or blue hues. The presence of other minerals like mica can introduce black or green shades.
Density and Porosity: Granite typically has a density between 2.65 and 2.75 g/cm³. It is relatively less porous compared to other stones, contributing to its strength and resistance to weathering.
Chemical Resistance: Granite is generally resistant to acids and alkalis, making it suitable for various installations where chemical exposure is possible.
Thermal Stability: Its high melting point and ability to withstand temperature variations make granite an excellent material for high-temperature applications.
Radiation: Natural granite contains trace amounts of radioactive elements like uranium, which can emit radon gas, albeit typically at very low, safe levels.