igneous
Granite
Granite (felsic intrusive igneous rock)
Hardness of 6 on the Mohs scale; color typically ranges from pink, white, grey, to black depending on mineral content; vitreous to dull luster; phaneritic crystal structure (coarse-grained visible crystals); specific gravity of 2.65 to 2.75.
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Physical properties
Hardness of 6 on the Mohs scale; color typically ranges from pink, white, grey, to black depending on mineral content; vitreous to dull luster; phaneritic crystal structure (coarse-grained visible crystals); specific gravity of 2.65 to 2.75.
Formation & geological history
Formed from the slow cooling and crystallization of magma rich in silica and alkali metals far beneath the Earth's surface over millions of years.
Uses & applications
Widely used in construction for dimensional stone, floor tiles, kitchen countertops, monuments, and paving.
Geological facts
Granite makes up a major portion of the Earth's continental crust and is exceptionally durable against weathering.
Field identification & locations
Easily identified by its speckled pink, white, and black crystalline appearance. Found globally in major mountain ranges and continental shields.
