igneous
Granite
Intrusive Igneous Rock
Hardness of 6-7 on the Mohs scale, coarse-grained (phaneritic) texture, colors typically include pink, gray, white, or black depending on mineral content, vitreous to dull luster, lacks distinct overall crystal cleavage but individual minerals like feldspar and mica show cleavage, specific gravity of 2.65-2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, coarse-grained (phaneritic) texture, colors typically include pink, gray, white, or black depending on mineral content, vitreous to dull luster, lacks distinct overall crystal cleavage but individual minerals like feldspar and mica show cleavage, specific gravity of 2.65-2.75.
Formation & geological history
Formed from the slow crystallization of magma below the Earth's surface over millions of years. Common in continental crusts globally.
Uses & applications
Widely used in construction, architectural buildings, monuments, floor tiles, and countertops due to its durability and aesthetic appeal.
Geological facts
Granite is the most common rock of the Earth's continental crust. It is primarily composed of quartz, alkali feldspar, and plagioclase feldspar, along with minor amounts of micas and amphiboles.
Field identification & locations
Easily identifiable in the field by its interlocking, visible mineral crystals (salt-and-pepper appearance with distinct pink or white feldspar grains). Found worldwide in major mountain ranges and shields.
