igneous
Granite
Intrusive Igneous Rock
Hardness of 6-7 on the Mohs scale, colors vary widely (pink, white, gray) depending on mineral content, dull to glassy luster, coarse-grained phaneritic crystal structure, lacks prominent cleavage, specific gravity of 2.65-2.75
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Physical properties
Hardness of 6-7 on the Mohs scale, colors vary widely (pink, white, gray) depending on mineral content, dull to glassy luster, coarse-grained phaneritic crystal structure, lacks prominent cleavage, specific gravity of 2.65-2.75
Formation & geological history
Formed from the slow cooling and crystallization of magma rich in silica and alkali metal oxides beneath the Earth's surface over millions of years
Uses & applications
Commonly used in construction, countertops, monuments, curbing, and various architectural applications
Geological facts
Granite is the most common igneous rock in the Earth's continental crust and forms the core of many major mountain ranges
Field identification & locations
Identified by its visible interlocking crystals of quartz, feldspar, and mica; found globally in shields and orogenic belts
