igneous
Granite
Phaneritic Igneous Rock
Hardness of 6-7 on the Mohs scale, colors typically include pink, white, gray, and black, vitreous to dull luster, phaneritic (coarse-grained) crystal structure, specific gravity around 2.65-2.75.
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Physical properties
Hardness of 6-7 on the Mohs scale, colors typically include pink, white, gray, and black, vitreous to dull luster, phaneritic (coarse-grained) crystal structure, specific gravity around 2.65-2.75.
Formation & geological history
Formed from the slow cooling of magma rich in silica and alkali metals far beneath the Earth's surface, typically Precambrian to Cenozoic in age.
Uses & applications
Widely used in construction, monuments, flooring, countertops, and decorative aggregate.
Geological facts
Granite is the most common rock of the Earth's continental crust and is frequently found in major mountain ranges.
Field identification & locations
Identified by its visible interlocking crystals of quartz, feldspar, and mica. Commonly found in shield areas and glacial riverbeds.
