igneous
Granite
Intrusive Igneous Rock
Hardness of 6 on the Mohs scale; typically pink, white, gray, or black in color; dull to vitreous luster; phaneritic crystal structure with visible interlocking mineral grains; specific gravity of 2.65 to 2.75.
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Physical properties
Hardness of 6 on the Mohs scale; typically pink, white, gray, or black in color; dull to vitreous luster; phaneritic crystal structure with visible interlocking mineral grains; 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 aluminum silicates beneath the Earth's surface, typically over millions of years.
Uses & applications
Widely used in construction, dimension stone for buildings, monuments, paving, countertops, and interior tiles.
Geological facts
Granite is the most common plutonic rock of the Earth's crust and forms a major part of continental landmasses.
Field identification & locations
Easily identified by its speckled, coarse-grained appearance containing quartz, feldspar, and mica. Found globally in shield areas and mountain ranges.
