igneous
Granite
Intrusive Igneous Rock
Hardness of 6 on the Mohs scale; commonly gray, pink, or white speckled with dark minerals; dull to vitreous luster; interlocking crystalline structure with quartz, feldspar, and mica; poor to indistinct cleavage; specific gravity around 2.65-2.75.
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Physical properties
Hardness of 6 on the Mohs scale; commonly gray, pink, or white speckled with dark minerals; dull to vitreous luster; interlocking crystalline structure with quartz, feldspar, and mica; poor to indistinct cleavage; specific gravity around 2.65-2.75.
Formation & geological history
Formed from the slow cooling and crystallization of molten magma beneath the Earth's surface over millions of years, typically in continental crust.
Uses & applications
Widely used in construction for dimension stone, countertops, monuments, flooring, and facing stone due to its durability and aesthetic appeal.
Geological facts
Granite makes up a major part of continental crusts and is exceptionally resistant to weathering compared to other common rock types.
Field identification & locations
Identified by its visible, interlocking crystals of quartz, feldspar, and dark biotite or amphibole. Found globally in mountainous regions and shield areas.
