igneous
Granite
Plutonic Igneous Rock
AI-generated identification · may be incorrectMohs hardness of 6-7; pink, white, gray, or black mottled colors; vitreous to dull luster; phaneritic crystal structure with visible quartz, feldspar, and mica grains; specific gravity of 2.65-2.75.
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Physical properties
Mohs hardness of 6-7; pink, white, gray, or black mottled colors; vitreous to dull luster; phaneritic crystal structure with visible quartz, feldspar, and mica grains; specific gravity of 2.65-2.75.
Formation & geological history
Forms from the slow cooling and crystallization of magma beneath the Earth's surface, typically over millions of years.
Uses & applications
Widely used in construction, architectural building facades, countertops, monuments, and decorative landscaping.
Geological facts
Granite is the most common rock of the Earth's continental crust and is frequently transported by glacial action.
Field identification & locations
Easily identified by its interlocking, coarse-grained mineral crystals of quartz and feldspar; extremely common in glaciated northern regions.
